Only allow messaging update if analytics is enabled (#4236)

* Only allow messaging update if analytics are allowed

Follows up on #4194

* Remove duplicate changelog entry

* remove circular import

---------

Co-authored-by: Abubakar Abid <abubakar@huggingface.co>

CHANGELOG.md

@@ -10,7 +10,7 @@
 ## Bug Fixes:
 
 - Fix "TypeError: issubclass() arg 1 must be a class" When use Optional[Types] by [@lingfengchencn](https://github.com/lingfengchencn) in [PR 4200](https://github.com/gradio-app/gradio/pull/4200). 
-- Gradio will no longer send any analytics if analytics are disabled with the GRADIO_ANALYTICS_ENABLED environment variable. By [@akx](https://github.com/akx) in [PR 4194](https://github.com/gradio-app/gradio/pull/4194)
+- Gradio will no longer send any analytics or call home if analytics are disabled with the GRADIO_ANALYTICS_ENABLED environment variable. By [@akx](https://github.com/akx) in [PR 4194](https://github.com/gradio-app/gradio/pull/4194) and [PR 4236](https://github.com/gradio-app/gradio/pull/4236)
 - The deprecation warnings for kwargs now show the actual stack level for the invocation, by [@akx](https://github.com/akx) in [PR 4203](https://github.com/gradio-app/gradio/pull/4203).
 - Fix "TypeError: issubclass() arg 1 must be a class" When use Optional[Types] by [@lingfengchencn](https://github.com/lingfengchencn) in [PR 4200](https://github.com/gradio-app/gradio/pull/4200). 
 - Fixes a bug with typing.get_type_hints() on Python 3.9 by [@abidlabs](https://github.com/abidlabs) in [PR 4228](https://github.com/gradio-app/gradio/pull/4228).

gradio/strings.py

@@ -1,4 +1,5 @@
 import json
+import os
 import threading
 from typing import Dict
 
@@ -45,4 +46,5 @@ def get_updated_messaging(en: Dict):
         pass
 
 
-threading.Thread(target=get_updated_messaging, args=(en,)).start()
+if os.getenv("GRADIO_ANALYTICS_ENABLED", "True") == "True":
+    threading.Thread(target=get_updated_messaging, args=(en,)).start()