[TASK] Test escaped quotes in selectors outside of strings (#1489)

The extra datasets cover the kind of selectors reported in the OP of #1485.

Author: JakeQZ

CHANGELOG.md

@@ -10,7 +10,7 @@ Please also have a look at our
 
 ### Added
 
-- Add support for escaped quotes in the selectors (#1485)
+- Add support for escaped quotes in the selectors (#1485, #1489)
 - Provide line number in exception message for mismatched parentheses in
   selector (#1435)
 - Add support for CSS container queries (#1400)

tests/Unit/Property/SelectorTest.php

@@ -385,6 +385,10 @@ public static function provideSelectorsWithEscapedQuotes(): array
             'escaped backslash followed by quote' => ['a[data-test="test\\\\"]'],
             'escaped backslash before escaped quote' => ['a[data-test="test\\\\\\"value"]'],
             'triple backslash before quote' => ['a[data-test="test\\\\\\""]'],
+            'escaped single quotes in selector itself, with other escaped characters'
+                => ['.before\\:content-\\[\\\'\\\'\\]:before'],
+            'escaped double quotes in selector itself, with other escaped characters'
+                => ['.before\\:content-\\[\\"\\"\\]:before'],
         ];
     }