[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/space/ce/components/editor/embeds/mentions/root.tsx

@@ -1,4 +1,6 @@
 // plane editor
 import type { TCallbackMentionComponentProps } from "@plane/editor";
 
-export const EditorAdditionalMentionsRoot: React.FC<TCallbackMentionComponentProps> = () => null;
+export function EditorAdditionalMentionsRoot(_props: TCallbackMentionComponentProps) {
+  return null;
+}

apps/space/ce/components/issue-layouts/root.tsx

@@ -6,4 +6,6 @@ type Props = {
   publishSettings: PublishStore;
 };
 
-export const ViewLayoutsRoot = (_props: Props) => <PageNotFound />;
+export function ViewLayoutsRoot(_props: Props) {
+  return <PageNotFound />;
+}

apps/space/ce/components/navbar/index.tsx

@@ -5,4 +5,6 @@ type Props = {
 };
 
 // eslint-disable-next-line @typescript-eslint/no-unused-vars
-export const ViewNavbarRoot = (props: Props) => <></>;
+export function ViewNavbarRoot(props: Props) {
+  return <></>;
+}