Add warning and update PR checks for Swift on Linux (#2399)

* PR checks: Only run Swift build command on MacOS
* PR checks: update to only test Swift on MacOS
* Log warning if workflow is running Swift on Ubuntu
---------

Co-authored-by: Andrew Eisenberg <[email protected]>

Author: angelapwen

.github/workflows/__all-platform-bundle.yml

@@ -52,9 +52,8 @@ jobs:
           debug: true
           debug-artifact-name: my-debug-artifacts
           debug-database-name: my-db
-      - uses: ./../action/.github/actions/setup-swift
-        with:
-          codeql-path: ${{ steps.init.outputs.codeql-path }}
+          # We manually exclude Swift from the languages list here, as it is not supported on Ubuntu
+          languages: cpp,csharp,go,java,javascript,python,ruby 
       - name: Build code
         shell: bash
         run: ./build.sh

.github/workflows/__build-mode-manual.yml

@@ -42,10 +42,9 @@ jobs:
     - id: init
       uses: ./../action/init
       with:
+        # We manually exclude Swift from the languages list here, as it is not supported on Ubuntu
+        languages: cpp,csharp,go,java,javascript,python,ruby 
         tools: ${{ steps.prepare-test.outputs.tools-url }}
-    - uses: ./../action/.github/actions/setup-swift
-      with:
-        codeql-path: ${{ steps.init.outputs.codeql-path }}
     - name: Build code
       shell: bash
       run: ./build.sh