Performance/TaxonomyMetaInOptions: add support for handling PHP 8.0+ nullsafe object operator

Includes test.

Author: jrfnl

WordPressVIPMinimum/Sniffs/Performance/TaxonomyMetaInOptionsSniff.php

@@ -117,7 +117,9 @@ public function process_parameters( $stackPtr, $group_name, $matched_content, $p
 			}
 
 			$object_operator = $this->phpcsFile->findNext( Tokens::$emptyTokens, $variable_name + 1, null, true );
-			if ( $this->tokens[ $object_operator ]['code'] !== T_OBJECT_OPERATOR ) {
+			if ( $this->tokens[ $object_operator ]['code'] !== T_OBJECT_OPERATOR
+				&& $this->tokens[ $object_operator ]['code'] !== T_NULLSAFE_OBJECT_OPERATOR
+			) {
 				return;
 			}
 

WordPressVIPMinimum/Tests/Performance/TaxonomyMetaInOptionsUnitTest.inc

@@ -61,3 +61,6 @@ add_option(value: "$tag_id", option: 'option_name'); // OK.
 update_option(autoload: true, optin: "$tag_id", value: 10,); // OK, well, not really, typo in param name, but that's not the concern of the sniff.
 
 add_option(value: $value, option: "$tag_id" ); // Bad.
+
+// Safeguard handling of PHP 8.0+ nullsafe object operator.
+get_option( 'taxonomy_rating_' . $obj?->term_id ); // NOK.

WordPressVIPMinimum/Tests/Performance/TaxonomyMetaInOptionsUnitTest.php

@@ -39,6 +39,7 @@ public function getWarningList() {
 			54 => 1,
 			55 => 1,
 			63 => 1,
+			66 => 1,
 		];
 	}
 }