fix chopStart and chopEnd tests (#53812)

the arrays were using duplicate keys, which meant only the latest defined element was running an assertion.

converted them to indexed arrays, and then adjusted the destructuring to treat the first element as the `$subject`.

tests/Support/SupportStrTest.php

@@ -1590,18 +1590,18 @@ public function testFromBase64()
     public function testChopStart()
     {
         foreach ([
-            'http://laravel.com' => ['http://', 'laravel.com'],
-            'http://-http://' => ['http://', '-http://'],
-            'http://laravel.com' => ['htp:/', 'http://laravel.com'],
-            'http://laravel.com' => ['http://www.', 'http://laravel.com'],
-            'http://laravel.com' => ['-http://', 'http://laravel.com'],
-            'http://laravel.com' => [['https://', 'http://'], 'laravel.com'],
-            'http://www.laravel.com' => [['http://', 'www.'], 'www.laravel.com'],
-            'http://http-is-fun.test' => ['http://', 'http-is-fun.test'],
-            '🌊✋' => ['🌊', '✋'],
-            '🌊✋' => ['✋', '🌊✋'],
-        ] as $subject => $value) {
-            [$needle, $expected] = $value;
+            ['http://laravel.com', 'http://', 'laravel.com'],
+            ['http://-http://', 'http://', '-http://'],
+            ['http://laravel.com', 'htp:/', 'http://laravel.com'],
+            ['http://laravel.com', 'http://www.', 'http://laravel.com'],
+            ['http://laravel.com', '-http://', 'http://laravel.com'],
+            ['http://laravel.com', ['https://', 'http://'], 'laravel.com'],
+            ['http://www.laravel.com', ['http://', 'www.'], 'www.laravel.com'],
+            ['http://http-is-fun.test', 'http://', 'http-is-fun.test'],
+            ['🌊✋', '🌊', '✋'],
+            ['🌊✋', '✋', '🌊✋'],
+        ] as $value) {
+            [$subject, $needle, $expected] = $value;
 
             $this->assertSame($expected, Str::chopStart($subject, $needle));
         }
@@ -1610,18 +1610,18 @@ public function testChopStart()
     public function testChopEnd()
     {
         foreach ([
-            'path/to/file.php' => ['.php', 'path/to/file'],
-            '.php-.php' => ['.php', '.php-'],
-            'path/to/file.php' => ['.ph', 'path/to/file.php'],
-            'path/to/file.php' => ['foo.php', 'path/to/file.php'],
-            'path/to/file.php' => ['.php-', 'path/to/file.php'],
-            'path/to/file.php' => [['.html', '.php'], 'path/to/file'],
-            'path/to/file.php' => [['.php', 'file'], 'path/to/file'],
-            'path/to/php.php' => ['.php', 'path/to/php'],
-            '✋🌊' => ['🌊', '✋'],
-            '✋🌊' => ['✋', '✋🌊'],
-        ] as $subject => $value) {
-            [$needle, $expected] = $value;
+            ['path/to/file.php', '.php', 'path/to/file'],
+            ['.php-.php', '.php', '.php-'],
+            ['path/to/file.php', '.ph', 'path/to/file.php'],
+            ['path/to/file.php', 'foo.php', 'path/to/file.php'],
+            ['path/to/file.php', '.php-', 'path/to/file.php'],
+            ['path/to/file.php', ['.html', '.php'], 'path/to/file'],
+            ['path/to/file.php', ['.php', 'file'], 'path/to/file'],
+            ['path/to/php.php', '.php', 'path/to/php'],
+            ['✋🌊', '🌊', '✋'],
+            ['✋🌊', '✋', '✋🌊'],
+        ] as $value) {
+            [$subject, $needle, $expected] = $value;
 
             $this->assertSame($expected, Str::chopEnd($subject, $needle));
         }