Fix OFT report file format

The local composite action has been adapted to explicitly  set the
report format to "html" when invoking the standard OFT Action to
override the default ("plain").

.github/actions/run-oft/action.yaml

@@ -47,6 +47,7 @@ runs:
       with:
         file-patterns: ${{ inputs.file-patterns }}
         report-filename: ${{ env.TRACING_REPORT_FILE_NAME }}
+        report-format: "html"
 
     - name: Upload tracing report (html)
       uses: actions/upload-artifact@v4