chore: proper current_app.config proxy usage (#34345)

Co-authored-by: Claude <noreply@anthropic.com>

superset/commands/sql_lab/estimate.py

@@ -19,9 +19,10 @@ from __future__ import annotations
 import logging
 from typing import Any, TypedDict
 
+from flask import current_app as app
 from flask_babel import gettext as __
 
-from superset import app, db
+from superset import db
 from superset.commands.base import BaseCommand
 from superset.errors import ErrorLevel, SupersetError, SupersetErrorType
 from superset.exceptions import SupersetErrorException, SupersetTimeoutException
@@ -29,10 +30,6 @@ from superset.jinja_context import get_template_processor
 from superset.models.core import Database
 from superset.utils import core as utils
 
-config = app.config
-SQLLAB_QUERY_COST_ESTIMATE_TIMEOUT = config["SQLLAB_QUERY_COST_ESTIMATE_TIMEOUT"]
-stats_logger = config["STATS_LOGGER"]
-
 logger = logging.getLogger(__name__)
 
 
@@ -81,7 +78,7 @@ class QueryEstimationCommand(BaseCommand):
             template_processor = get_template_processor(self._database)
             sql = template_processor.process_template(sql, **self._template_params)
 
-        timeout = SQLLAB_QUERY_COST_ESTIMATE_TIMEOUT
+        timeout = app.config["SQLLAB_QUERY_COST_ESTIMATE_TIMEOUT"]
         timeout_msg = f"The estimation exceeded the {timeout} seconds timeout."
         try:
             with utils.timeout(seconds=timeout, error_message=timeout_msg):
@@ -100,7 +97,7 @@ class QueryEstimationCommand(BaseCommand):
                         "The query estimation was killed after %(sqllab_timeout)s "
                         "seconds. It might be too complex, or the database might be "
                         "under heavy load.",
-                        sqllab_timeout=SQLLAB_QUERY_COST_ESTIMATE_TIMEOUT,
+                        sqllab_timeout=app.config["SQLLAB_QUERY_COST_ESTIMATE_TIMEOUT"],
                     ),
                     error_type=SupersetErrorType.SQLLAB_TIMEOUT_ERROR,
                     level=ErrorLevel.ERROR,