feat: update Office365 getMainTimeZone to handle new Graph API format and convert Windows timezones to IANA (#23763)

* feat: update Office365 getMainTimeZone to handle new Graph API format and convert Windows timezones to IANA

- Handle new Graph API response format with 'value' field containing Windows timezone names
- Add windows-iana dependency for timezone conversion from Windows to IANA format
- Maintain backward compatibility with legacy direct string response format
- Add proper error handling with fallback to original timezone name if conversion fails
- Log conversion details for debugging and monitoring

Co-Authored-By: morgan@cal.com <morgan@cal.com>

* fix: example app select default value

* fixup! fix: example app select default value

* fix: preserve legacy string timezone behavior, only convert new object format

- Address GitHub comments from supalarry about behavior change concerns
- Preserve original behavior: return legacy string responses as-is without conversion
- Only convert Windows timezones from new Graph API object format
- Add explanatory comments about API format evolution
- Restructure conditional logic to handle formats independently

Co-Authored-By: morgan@cal.com <morgan@cal.com>

* trigger CI with ready-for-e2e label

Co-Authored-By: morgan@cal.com <morgan@cal.com>

---------

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Co-authored-by: morgan@cal.com <morgan@cal.com>
Co-authored-by: Morgan <33722304+ThyMinimalDev@users.noreply.github.com>

packages/platform/examples/base/src/pages/_app.tsx

@@ -73,7 +73,7 @@ export default function App({ Component, pageProps }: AppProps) {
     }
   }, []);
   useEffect(() => {
-    if (!!selectedUser) {
+    if (selectedUser) {
       setAccessToken(selectedUser.accessToken);
       setUserEmail(selectedUser.email);
       setUsername(selectedUser.username);
@@ -83,13 +83,15 @@ export default function App({ Component, pageProps }: AppProps) {
   return (
     <div className={`${poppins.className} text-black`}>
       {options.length > 0 && (
-        <Select defaultValue={selectedUser} onChange={setSelectedUser} options={options} />
+        <Select
+          defaultValue={options.find((opt: TUser | null) => opt?.email.includes("lauris"))}
+          onChange={(opt: TUser | null) => setSelectedUser(opt)}
+          options={options}
+        />
       )}
       <CalProvider
         accessToken={accessToken}
-        // eslint-disable-next-line turbo/no-undeclared-env-vars
         clientId={process.env.NEXT_PUBLIC_X_CAL_ID ?? ""}
-        // eslint-disable-next-line turbo/no-undeclared-env-vars
         options={{ apiUrl: process.env.NEXT_PUBLIC_CALCOM_API_URL ?? "", refreshUrl: "/api/refresh" }}>
         {email ? (
           <>