fix: add back migration_runner in cli_tools_click

Co-authored-by: George Weale <gweale@google.com>
PiperOrigin-RevId: 855327486

Author: GWeale

src/google/adk/cli/cli_tools_click.py

@@ -36,6 +36,7 @@
 from . import cli_deploy
 from .. import version
 from ..evaluation.constants import MISSING_EVAL_DEPENDENCIES_MESSAGE
+from ..sessions.migration import migration_runner
 from .cli import run_cli
 from .fast_api import get_fast_api_app
 from .utils import envs