minor symfony#51049 [Form] Relax assertions for ICU 72.1 (xabbuh)

This PR was merged into the 5.4 branch.

Discussion
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[Form] Relax assertions for ICU 72.1

| Q             | A
| ------------- | ---
| Branch?       | 5.4
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Tickets       |
| License       | MIT
| Doc PR        |

> In many formatting patterns, ASCII spaces are replaced with Unicode spaces
> (e.g., a "thin space").

see https://icu.unicode.org/download/72

Commits
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658e0bf relax assertions for ICU 72.1

Author: derrabus

src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToLocalizedStringTransformerTest.php

@@ -124,7 +124,7 @@ public function testTransformToDifferentLocale()
 
         $transformer = new DateTimeToLocalizedStringTransformer('UTC', 'UTC');
 
-        $this->assertEquals('Feb 3, 2010, 4:05 AM', $transformer->transform($this->dateTime));
+        $this->assertMatchesRegularExpression('/^Feb 3, 2010, 4:05\s+AM$/u', $transformer->transform($this->dateTime));
     }
 
     public function testTransformEmpty()

src/Symfony/Component/Form/Tests/Extension/Core/Type/DateTimeTypeTest.php

@@ -530,7 +530,7 @@ public function testSingleTextWidgetWithCustomNonHtml5Format()
         ]);
         $view = $form->createView();
 
-        $this->assertSame('2/13/19, 7:12:13 PM', $view->vars['value']);
+        $this->assertMatchesRegularExpression('#^2/13/19, 7:12:13\s+PM$#u', $view->vars['value']);
     }
 
     public function testDateTypeChoiceErrorsBubbleUp()