Put macOS back into PR builds (#1259)

Now that we have mac-14 runners the performance and reliability seems
high enough to start including them in PR builds again. This will help
with verifying native code dependencies and build changes that are in
flight.

.github/workflows/ci.yml

@@ -75,11 +75,6 @@ jobs:
     strategy:
       matrix:
         os: [windows-latest, ubuntu-latest, macos-14]
-        is_pr:
-          - ${{ github.event_name == 'pull_request' }}
-        exclude:
-          - os: macos-14
-            is_pr: true
 
     runs-on: ${{matrix.os}}
 
@@ -114,11 +109,6 @@ jobs:
     strategy:
       matrix:
         os: [windows-latest, ubuntu-latest, macos-14]
-        is_pr:
-          - ${{ github.event_name == 'pull_request' }}
-        exclude:
-          - os: macos-14
-            is_pr: true
 
     runs-on: ${{matrix.os}}