prepare xts and run xts flows fail if precursor tag does not already exist in the repository

[rbarkerSL]

Description

When ZXF: Prepare Extended Test Suite and ZXCron: Extended Test Suite workflows run they perform the following check:

        name: Check for tags
        id: check-tags-exist
        run: |
          XTS_COMMIT=$(git rev-list -n 1 "${XTS_CANDIDATE_TAG}")
          set +e
          git branch --contains "${XTS_COMMIT}" | grep --quiet develop >/dev/null 2>&1
          BRANCH_ON_DEVELOP="${?}"
          set -e
          if [[ -n "${XTS_COMMIT}" && "${BRANCH_ON_DEVELOP}" -eq 0 ]]; then
            ....
          fi

If the precursor tag xts-commit does not exist in the repository flow the first check XTS_COMMIT=$(git rev-list -n 1 "${XTS_CANDIDATE_TAG}") will error out saying:

fatal: ambiguous argument 'xts-candidate': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'

Steps to reproduce

Manually trigger either workflow

Additional context

Both of these workflows should pass through that check and either create the tag or consume the tag regardless of its presence.

Hedera network

No response

Version

develop

Operating system

Linux