chore: run the new gate only on master merge

Author: vytas7

.github/workflows/test-dist.yaml

@@ -5,9 +5,6 @@ on:
   push:
     branches:
       - "*"
-  pull_request:
-    branches:
-      - master
 
 jobs:
   test-dist:

docs/_newsfragments/2384.bugfix.rst

@@ -1,4 +1,4 @@
 Installing Falcon 4.0.0 unexpectly copies many unintended directories from the
-source tree to the venv's ``site-packages``. The issue has been rectified, and
+source tree to the venv's ``site-packages``. This issue has been rectified, and
 our CI has been extended with new tests (that verify what is actually installed
 from the distribution) to make sure this regression does not resurface.