Make ui_next the default UI (#15405)

Change django url dispatcher to serve up ui_next files instead of old ui files

Old UI will not be served with this change

Github CI still runs old ui tests (to be removed in another PR)

Remove the Github workflows that build old UI

---------

Signed-off-by: Seth Foster <fosterbseth@gmail.com>

awx/urls.py

@@ -18,8 +18,6 @@ def get_urlpatterns(prefix=None):
         prefix = f'/{prefix}/'
 
     urlpatterns = [
-        re_path(r'', include('awx.ui.urls', namespace='ui')),
-        re_path(r'^ui_next/.*', include('awx.ui_next.urls', namespace='ui_next')),
         path(f'api{prefix}', include('awx.api.urls', namespace='api')),
     ]
 
@@ -36,6 +34,9 @@ def get_urlpatterns(prefix=None):
         re_path(r'^(?:api/)?500.html$', handle_500),
         re_path(r'^csp-violation/', handle_csp_violation),
         re_path(r'^login/', handle_login_redirect),
+        # want api/v2/doesnotexist to return a 404, not match the ui_next urls,
+        # so use a negative lookahead assertion here
+        re_path(r'^(?!api/|sso/).*', include('awx.ui_next.urls', namespace='ui_next')),
     ]
 
     if settings.SETTINGS_MODULE == 'awx.settings.development':