Remove usage of "form-horizonal" and "form-inline" classes.

They don't exist in Bootstrap 5

Author: ADmad

src/View/Helper/FormHelper.php

@@ -1284,8 +1284,6 @@ protected function _processFormOptions(array $options): array
             return $options;
         }
 
-        $options = $this->injectClasses('form-' . $this->_align, $options);
-
         if ($this->_align === static::ALIGN_INLINE) {
             $options = $this->injectClasses(
                 [

tests/TestCase/View/Helper/FormHelperTest.php

@@ -641,7 +641,7 @@ public function testInlineFormCreate()
                 'method' => 'post',
                 'accept-charset' => 'utf-8',
                 'action' => '/articles/add',
-                'class' => 'form-inline row g-3 align-items-center',
+                'class' => 'row g-3 align-items-center',
             ],
         ];
         $this->assertHtml($expected, $result);
@@ -658,7 +658,7 @@ public function testInlineFormCreateWithCustomSpacing()
                 'method' => 'post',
                 'accept-charset' => 'utf-8',
                 'action' => '/articles/add',
-                'class' => 'form-inline row custom-spacing align-items-center',
+                'class' => 'row custom-spacing align-items-center',
             ],
         ];
         $this->assertHtml($expected, $result);
@@ -672,7 +672,6 @@ public function testHorizontalFormCreate()
                 'method' => 'post',
                 'accept-charset' => 'utf-8',
                 'action' => '/articles/add',
-                'class' => 'form-horizontal',
             ],
         ];
         $this->assertHtml($expected, $result);
@@ -770,7 +769,6 @@ public function testHorizontalFormCreateFromConfig()
                 'method' => 'post',
                 'accept-charset' => 'utf-8',
                 'action' => '/articles/add',
-                'class' => 'form-horizontal',
             ],
         ];
         $this->assertHtml($expected, $result);