fix(#130): pass VCS_TYPE env var from action.yml Run review step

The binary detects VCS type from VCS_TYPE env var, but action.yml did not
pass it to the Run review step. This caused the binary to fall back to a
URL heuristic (github.com substring), which misclassifies GitHub Enterprise
Server hosts whose URL does not contain 'github'.

The 'Determine version' step already outputs vcs_type — wire it through to
the Run review env block so explicit VCS_TYPE always takes precedence.

.gitea/actions/review/action.yml

@@ -487,6 +487,7 @@ runs:
       shell: bash
       env:
         VCS_URL: ${{ steps.version.outputs.server_url }}
+        VCS_TYPE: ${{ steps.version.outputs.vcs_type }}
         GITEA_REPO: ${{ inputs.repo || github.repository }}
         PR_NUMBER: ${{ inputs.pr-number || github.event.pull_request.number }}
         REVIEWER_TOKEN: ${{ inputs.reviewer-token }}