fix(gtmetrix): escape special regex characters in unused JavaScript removal

Author: sayak-sarkar

frontend/scripts/gtmetrix-optimizer.cjs

@@ -316,7 +316,9 @@ function removeUnusedJavaScript() {
       if (namedImports) {
         const importNames = namedImports[1].split(',').map(name => name.trim());
         const usedImports = importNames.filter(name => {
-          const regex = new RegExp(`\\b${name}\\b`, 'g');
+          // Escape special regex characters to prevent invalid regex patterns
+          const escapedName = name.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
+          const regex = new RegExp(`\\b${escapedName}\\b`, 'g');
           const matches = js.match(regex) || [];
           return matches.length > 1; // More than just the import statement
         });