chore: Set fail fast to false, except for when the merge group is used (#5897)

This PR sets the fail-fast strategy option to false (it defaults to true), unless it is run by a merge group.

Co-authored-by: Bart Thomee <11445373+bthomee@users.noreply.github.com>

.github/workflows/on-pr.yml

@@ -103,6 +103,7 @@ jobs:
     if: ${{ needs.should-run.outputs.go == 'true' }}
     uses: ./.github/workflows/reusable-build-test.yml
     strategy:
+      fail-fast: false
       matrix:
         os: [linux, macos, windows]
     with:

.github/workflows/on-trigger.yml

@@ -65,6 +65,7 @@ jobs:
   build-test:
     uses: ./.github/workflows/reusable-build-test.yml
     strategy:
+      fail-fast: ${{ github.event_name == 'merge_group' }}
       matrix:
         os: [linux, macos, windows]
     with:

.github/workflows/reusable-build-test.yml

@@ -42,7 +42,7 @@ jobs:
       - generate-matrix
     uses: ./.github/workflows/reusable-build-test-config.yml
     strategy:
-      fail-fast: false
+      fail-fast: ${{ github.event_name == 'merge_group' }}
       matrix: ${{ fromJson(needs.generate-matrix.outputs.matrix) }}
       max-parallel: 10
     with: