ci: default PEER_REFS for push runs of compatibility workflow

The GitHub Actions workflow invokes run_functional_tests.sh directly
(not via make), so the Makefile-resolved PEER_REFS is unavailable here
and push events have no workflow_dispatch input. Fall back to the same
default refs the manual dispatch already used.

Author: Egor Rachkovskii

.github/workflows/functional-tests-compatibility.yml

@@ -39,7 +39,7 @@ jobs:
         env:
           FUNCTIONAL_TESTS_MARKER: compatibility
           FUNCTIONAL_TESTS_LOG_LEVEL: INFO
-          PEER_REFS: ${{ inputs.peer_refs }}
+          PEER_REFS: ${{ inputs.peer_refs || 'v10.33.0 v10.32.0' }}
         run: ./scripts/run_functional_tests.sh
 
       - name: Test report