fix: sort imports in test files (ruff I001)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

web/tests/test_e2e_flows.py

@@ -20,11 +20,12 @@ from pathlib import Path
 from unittest.mock import AsyncMock, patch
 
 import pytest
-from padelnomics import core
 from padelnomics.app import create_app
 from padelnomics.migrations.migrate import migrate
 from playwright.sync_api import expect, sync_playwright
 
+from padelnomics import core
+
 pytestmark = pytest.mark.visual
 
 PORT = 5113