Merge branch '5.4' into 6.0

* 5.4:
  [Security] Do not overwrite already stored tokens for REMOTE_USER authentication
  [Validator] Fix validation for single level domains
  [Notifier] add Vonage bridge to replace the Nexmo one
  Fix redundant type casts
  Increased the reserved memory from 10k to 32k
  Complete event name & dispatcher in EventDispatcherDebugCommand
  [DoctrineBridge] Add DbalLoggerTest to group legacy
  Leverage DBAL's getNativeConnection() method
  [FrameworkBundle] Fix property-info phpstan extractor discovery
  Fix idempotency of LocoProvider write method

Author: nicolas-grekas

Tests/Extension/FormExtensionBootstrap5HorizontalLayoutTest.php

@@ -59,7 +59,7 @@ protected function setUp(): void
 
     protected function renderForm(FormView $view, array $vars = []): string
     {
-        return (string) $this->renderer->renderBlock($view, 'form', $vars);
+        return $this->renderer->renderBlock($view, 'form', $vars);
     }
 
     protected function renderLabel(FormView $view, $label = null, array $vars = []): string
@@ -68,42 +68,42 @@ protected function renderLabel(FormView $view, $label = null, array $vars = []):
             $vars += ['label' => $label];
         }
 
-        return (string) $this->renderer->searchAndRenderBlock($view, 'label', $vars);
+        return $this->renderer->searchAndRenderBlock($view, 'label', $vars);
     }
 
     protected function renderHelp(FormView $view): string
     {
-        return (string) $this->renderer->searchAndRenderBlock($view, 'help');
+        return $this->renderer->searchAndRenderBlock($view, 'help');
     }
 
     protected function renderErrors(FormView $view): string
     {
-        return (string) $this->renderer->searchAndRenderBlock($view, 'errors');
+        return $this->renderer->searchAndRenderBlock($view, 'errors');
     }
 
     protected function renderWidget(FormView $view, array $vars = []): string
     {
-        return (string) $this->renderer->searchAndRenderBlock($view, 'widget', $vars);
+        return $this->renderer->searchAndRenderBlock($view, 'widget', $vars);
     }
 
     protected function renderRow(FormView $view, array $vars = []): string
     {
-        return (string) $this->renderer->searchAndRenderBlock($view, 'row', $vars);
+        return $this->renderer->searchAndRenderBlock($view, 'row', $vars);
     }
 
     protected function renderRest(FormView $view, array $vars = []): string
     {
-        return (string) $this->renderer->searchAndRenderBlock($view, 'rest', $vars);
+        return $this->renderer->searchAndRenderBlock($view, 'rest', $vars);
     }
 
     protected function renderStart(FormView $view, array $vars = []): string
     {
-        return (string) $this->renderer->renderBlock($view, 'form_start', $vars);
+        return $this->renderer->renderBlock($view, 'form_start', $vars);
     }
 
     protected function renderEnd(FormView $view, array $vars = []): string
     {
-        return (string) $this->renderer->renderBlock($view, 'form_end', $vars);
+        return $this->renderer->renderBlock($view, 'form_end', $vars);
     }
 
     protected function setTheme(FormView $view, array $themes, $useDefaultThemes = true): void

Tests/Extension/FormExtensionBootstrap5LayoutTest.php

@@ -111,7 +111,7 @@ public function testMoneyWidgetInIso()
 
     protected function renderForm(FormView $view, array $vars = []): string
     {
-        return (string) $this->renderer->renderBlock($view, 'form', $vars);
+        return $this->renderer->renderBlock($view, 'form', $vars);
     }
 
     protected function renderLabel(FormView $view, $label = null, array $vars = []): string
@@ -120,42 +120,42 @@ protected function renderLabel(FormView $view, $label = null, array $vars = []):
             $vars += ['label' => $label];
         }
 
-        return (string) $this->renderer->searchAndRenderBlock($view, 'label', $vars);
+        return $this->renderer->searchAndRenderBlock($view, 'label', $vars);
     }
 
     protected function renderHelp(FormView $view): string
     {
-        return (string) $this->renderer->searchAndRenderBlock($view, 'help');
+        return $this->renderer->searchAndRenderBlock($view, 'help');
     }
 
     protected function renderErrors(FormView $view): string
     {
-        return (string) $this->renderer->searchAndRenderBlock($view, 'errors');
+        return $this->renderer->searchAndRenderBlock($view, 'errors');
     }
 
     protected function renderWidget(FormView $view, array $vars = []): string
     {
-        return (string) $this->renderer->searchAndRenderBlock($view, 'widget', $vars);
+        return $this->renderer->searchAndRenderBlock($view, 'widget', $vars);
     }
 
     protected function renderRow(FormView $view, array $vars = []): string
     {
-        return (string) $this->renderer->searchAndRenderBlock($view, 'row', $vars);
+        return $this->renderer->searchAndRenderBlock($view, 'row', $vars);
     }
 
     protected function renderRest(FormView $view, array $vars = []): string
     {
-        return (string) $this->renderer->searchAndRenderBlock($view, 'rest', $vars);
+        return $this->renderer->searchAndRenderBlock($view, 'rest', $vars);
     }
 
     protected function renderStart(FormView $view, array $vars = []): string
     {
-        return (string) $this->renderer->renderBlock($view, 'form_start', $vars);
+        return $this->renderer->renderBlock($view, 'form_start', $vars);
     }
 
     protected function renderEnd(FormView $view, array $vars = []): string
     {
-        return (string) $this->renderer->renderBlock($view, 'form_end', $vars);
+        return $this->renderer->renderBlock($view, 'form_end', $vars);
     }
 
     protected function setTheme(FormView $view, array $themes, $useDefaultThemes = true): void