[Glitch] Rename JSX files with proper .jsx extension

Port 44a7d87cb1 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/theme.yml

@@ -1,13 +1,13 @@
 #  (REQUIRED) The location of the pack files.
 pack:
   admin:
-    - packs/admin.js
-    - packs/public.js
-  auth: packs/public.js
+    - packs/admin.jsx
+    - packs/public.jsx
+  auth: packs/public.jsx
   common:
     filename: packs/common.js
     stylesheet: true
-  embed: packs/public.js
+  embed: packs/public.jsx
   error: packs/error.js
   home:
     filename: packs/home.js
@@ -18,9 +18,9 @@ pack:
       - flavours/glitch/async/notifications
   mailer:
   modal:
-  public: packs/public.js
+  public: packs/public.jsx
   settings: packs/settings.js
-  share: packs/share.js
+  share: packs/share.jsx
 
 #  (OPTIONAL) The directory which contains localization files for
 #  the flavour, relative to this directory. The contents of this