chore(migration): Use proper commit type designator when creating PR (#11114)

Author: vchudnov-g

scripts/split_repo_migration/git-migrate-history.sh

@@ -165,9 +165,9 @@ git push -u origin "${BRANCH}" --force
 # create pull request
 if gh --help > /dev/null
 then
-  gh pr create --title "feat: Migrate code from ${SOURCE_REPO} into ${TARGET_PATH} (#${ISSUE_NUMBER})" --body "See #${ISSUE_NUMBER}."
+  gh pr create --title "chore(migration): Migrate code from ${SOURCE_REPO} into ${TARGET_PATH}" --body "See #${ISSUE_NUMBER}."
 else
   hub pull-request -m "migrate code from ${SOURCE_REPO}"
 fi
 
-popd
+popd