Ignore nested Vaadin generated folders (not just on level 1)

Also remove dev-bundle folder as it's no longer used since at least 24.8

Author: AB-xdev

.gitignore

@@ -49,10 +49,9 @@ tsconfig.json
 types.d.ts
 vite.config.ts
 vite.generated.ts
-/*/src/main/frontend/generated/
-/*/src/main/frontend/index.html
-/*/src/main/dev-bundle/
-/*/src/main/bundles/
+**/src/main/frontend/generated/
+**/src/main/frontend/index.html
+**/src/main/bundles/
 *.lock