[WEB-5459] feat(codemods): add function declaration transformer with tests (#8137)

- Add jscodeshift-based codemod to convert arrow function components to function declarations
- Support React.FC, observer-wrapped, and forwardRef components
- Include comprehensive test suite covering edge cases
- Add npm script to run transformer across codebase
- Target only .tsx files in source directories, excluding node_modules and declaration files

* [WEB-5459] chore: updates after running codemod

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Co-authored-by: sriramveeraghanta <veeraghanta.sriram@gmail.com>

apps/web/core/lib/intercom-provider.tsx

@@ -13,7 +13,7 @@ export type IntercomProviderProps = {
   children: React.ReactNode;
 };
 
-const IntercomProvider: FC<IntercomProviderProps> = observer((props) => {
+const IntercomProvider = observer(function IntercomProvider(props: IntercomProviderProps) {
   const { children } = props;
   // hooks
   const { data: user } = useUser();