[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

---------

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

apps/admin/app/components/404.tsx

@@ -5,30 +5,32 @@ import { Button } from "@plane/propel/button";
 // images
 import Image404 from "@/app/assets/images/404.svg?url";
 
-const PageNotFound = () => (
-  <div className={`h-screen w-full overflow-hidden bg-custom-background-100`}>
-    <div className="grid h-full place-items-center p-4">
-      <div className="space-y-8 text-center">
-        <div className="relative mx-auto h-60 w-60 lg:h-80 lg:w-80">
-          <img src={Image404} alt="404 - Page not found" className="h-full w-full object-contain" />
+function PageNotFound() {
+  return (
+    <div className={`h-screen w-full overflow-hidden bg-custom-background-100`}>
+      <div className="grid h-full place-items-center p-4">
+        <div className="space-y-8 text-center">
+          <div className="relative mx-auto h-60 w-60 lg:h-80 lg:w-80">
+            <img src={Image404} alt="404 - Page not found" className="h-full w-full object-contain" />
+          </div>
+          <div className="space-y-2">
+            <h3 className="text-lg font-semibold">Oops! Something went wrong.</h3>
+            <p className="text-sm text-custom-text-200">
+              Sorry, the page you are looking for cannot be found. It may have been removed, had its name changed, or is
+              temporarily unavailable.
+            </p>
+          </div>
+          <Link to="/general/">
+            <span className="flex justify-center py-4">
+              <Button variant="neutral-primary" size="md">
+                Go to general settings
+              </Button>
+            </span>
+          </Link>
         </div>
-        <div className="space-y-2">
-          <h3 className="text-lg font-semibold">Oops! Something went wrong.</h3>
-          <p className="text-sm text-custom-text-200">
-            Sorry, the page you are looking for cannot be found. It may have been removed, had its name changed, or is
-            temporarily unavailable.
-          </p>
-        </div>
-        <Link to="/general/">
-          <span className="flex justify-center py-4">
-            <Button variant="neutral-primary" size="md">
-              Go to general settings
-            </Button>
-          </span>
-        </Link>
       </div>
     </div>
-  </div>
-);
+  );
+}
 
 export default PageNotFound;