CI: Ensure uploaded test artifacts have a unique name

Without this, if two CI runs on Linux both fail and want to upload
screenshots, we get an error like this on the second:

> Error: Failed to CreateArtifact: Received non-retryable error: Failed
> request: (409) Conflict: an artifact with this name already exists on
> the workflow run

Using all the inputs as part of the name should make this kind of
conflict impossible.

.github/workflows/lagom-template.yml

@@ -190,7 +190,7 @@ jobs:
         if: ${{ always() && inputs.fuzzer == 'NO_FUZZ' }}
         uses: actions/upload-artifact@v4
         with:
-          name: libweb-test-artifacts-${{ inputs.os_name }}
+          name: libweb-test-artifacts-${{ inputs.os_name }}-${{inputs.fuzzer}}-${{inputs.toolchain}}-${{inputs.clang-plugins}}
           path: ${{ github.workspace }}/Build/UI/Headless/test-dumps
           retention-days: 7
           if-no-files-found: ignore