2496: Fix return value for non-Magento files in path copying

Updated the method to return an empty string instead of the full path for non-Magento files, ensuring consistent behavior. This also handles exceptions more cleanly by aligning the return values.

Author: VitaliyBoyko

src/main/java/com/magento/idea/magento2plugin/actions/CopyMagentoPath.java

@@ -84,13 +84,13 @@ public CopyMagentoPath() {
         } else if (isMagentoFile(virtualFile)) {
             paths = webPaths;
         } else {
-            return fullPath.toString();
+            return "";
         }
 
         try {
             return getResultPath(virtualFile, paths, fullPath, moduleName);
         } catch (ArrayIndexOutOfBoundsException exception) {
-            return fullPath.toString();
+            return "";
         }
     }