fix: refine handling of modifiers in anonymous class detection

Author: jackd248

src/Rules/DocBlockHeaderFixer.php

@@ -150,7 +150,7 @@ private function isAnonymousClass(Tokens $tokens, int $classIndex): bool
             }
 
             // T_ATTRIBUTE '#[' marks the start of an attribute (we exit it when going backwards)
-            if ($token->isGivenKind([T_ATTRIBUTE, T_FINAL, T_READONLY])) {
+            if ($token->isGivenKind(T_ATTRIBUTE)) {
                 $insideAttribute = false;
                 continue;
             }
@@ -160,6 +160,11 @@ private function isAnonymousClass(Tokens $tokens, int $classIndex): bool
                 continue;
             }
 
+            // Skip modifiers that can appear between 'new' and 'class'
+            if ($token->isGivenKind([T_FINAL, T_READONLY])) {
+                continue;
+            }
+
             // If we find 'new', it's an anonymous class
             if ($token->isGivenKind(T_NEW)) {
                 return true;