ci: Don't run both non-GUI/GUI Vim tests most of the time

.github/workflows/ci-macvim.yaml

@@ -68,16 +68,19 @@ jobs:
 
           - os: macos-13
             xcode: '15.2'
+            testgui: true
             extra: [vimtags, check-xcodeproj-compat]
 
           # Below runners use Apple Silicon.
           - os: macos-14
             xcode: '15.4'
+            testgui: false
             optimized: true
 
           # Most up to date OS and Xcode. Used to publish release for the main build.
           - os: macos-15
             xcode: '16.2'
+            testgui: true
             publish: true
             optimized: true
 
@@ -351,12 +354,13 @@ jobs:
           fi
 
       - name: Test MacVim
+        id: test_macvim
         timeout-minutes: 10
         run: |
           make ${MAKE_BUILD_ARGS} -C src macvim-tests
 
       - name: Upload failed MacVim test results
-        if: ${{ !cancelled() && failure() }}
+        if: ${{ !cancelled() && failure() && steps.test_macvim.conclusion == 'failure' }}
         uses: ./.github/actions/test_macvim_artifacts
 
       - name: Build Vim test binaries
@@ -370,20 +374,24 @@ jobs:
           make ${MAKE_BUILD_ARGS} -j${NPROC} -C src unittesttargets
 
       - name: Test Vim
+        if: startsWith(github.ref, 'refs/tags/') || !matrix.testgui
         timeout-minutes: 25
-        run: make ${MAKE_BUILD_ARGS} test
-
-      - name: Upload failed test files
-        if: ${{ !cancelled() && failure() }}
-        uses: ./.github/actions/test_artifacts
+        run: |
+          defaults delete org.vim.MacVim  # Clean up stale states
+          make ${MAKE_BUILD_ARGS} test
 
       - name: Test Vim (GUI)
+        if: startsWith(github.ref, 'refs/tags/') || matrix.testgui
         timeout-minutes: 25
         run: |
-          defaults delete org.vim.MacVim  # Clean up stale states left from MacVim tests
+          defaults delete org.vim.MacVim  # Clean up stale states
           make ${MAKE_BUILD_ARGS} -C src/testdir clean
           make ${MAKE_BUILD_ARGS} -C src testgui
 
+      - name: Upload failed test files
+        if: ${{ !cancelled() && failure() }}
+        uses: ./.github/actions/test_artifacts
+
       - name: Build MacVim dmg image
         if: matrix.publish && (startsWith(github.ref, 'refs/tags/') || github.ref == 'refs/heads/master')
         run: |