WP/DeprecatedFunctions: temporarily exclude one test on PHP 8.2

The logic in the PHP 8.2 Tokenizer needs to be adjusted to allow for PHP 8.2 Disjunctive Normal Types in combination with `readonly` properties.

While PHP 8.2 still allows for the `readonly` keyword being used as a function call - see: https://3v4l.org/hL5da -, the PHPCS tokenizer has not been adjusted yet to allow for this in a way which is compatible with DNT.

Also see:
* The discussion about this in squizlabs/PHP_CodeSniffer 3667
* php/php-src 9512

WordPress/Tests/WP/DeprecatedFunctionsUnitTest.php

@@ -96,6 +96,11 @@ public function getWarningList() {
 			$warnings[377]
 		);
 
+		// Temporarily until PHPCS supports PHP 8.2.
+		if ( PHP_VERSION_ID >= 80200 ) {
+			unset( $warnings[364] ); // Function call to readonly.
+		}
+
 		return $warnings;
 	}