Fix 'Test and lint' workflow running on forks (#551)

Author: brianschubert

.github/workflows/ci.yml

@@ -24,16 +24,11 @@ jobs:
   tests:
     name: Run tests
 
+    # if 'schedule' was the trigger,
+    # don't run it on contributors' forks
     if: >-
-      # if 'schedule' was the trigger,
-      # don't run it on contributors' forks
-      ${{
-        github.event_name != 'schedule'
-        || (
-          github.repository == 'python/typing_extensions'
-          && github.event_name == 'schedule'
-        )
-      }}
+      github.repository == 'python/typing_extensions'
+      || github.event_name != 'schedule'
 
     strategy:
       fail-fast: false