fix(ui): bump AntD to 5.26.0 to fix Splitter drag menu issue

[EnxDev]

SUMMARY

The Splitter selector caused the menu to remain in a stuck state after dragging on SQL Lab

Upgrading AntD from 5.24.9 to 5.26.0 resolves this behavior

The Ant Design Table component internally uses a hidden row called MeasureRow to calculate column widths.
This row generates a <div class="ant-table-measure-cell-content">textContent</div> for each column, which results in duplicate elements compared to the visible table cells.

This PR also updates the tests to account for these duplicates by refining selectors, ensuring they target only the intended visible elements.

NB: With this version of AntD, when we introduce React 19, we'll need to include the @ant-design/v5-patch-for-react-19 patch.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

• Before splitter drag menu
  https://github.com/user-attachments/assets/d53679a4-59d7-4005-96ae-44d30b9fe261

• After splitter drag menu
  https://github.com/user-attachments/assets/6b800540-bd11-41af-a08f-8ba8dff45438

• Before popover
  https://github.com/user-attachments/assets/c2a504cf-2703-4cc9-a4e7-37e7acfff2c0

• After popover
  https://github.com/user-attachments/assets/80a24ede-e683-4c25-a65f-713d72d1b67f

TESTING INSTRUCTIONS

1. All tests should pass
2. In SQL Lab, drag the divider up and down
3. Try to type in the SQL text area

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

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[github-actions]

⚠️ DEPRECATED WORKFLOW ⚠️

@EnxDev This workflow is deprecated! Please use the new Superset Showtime system instead:

• Replace "testenv-up" label with "🎪 trigger-start"
• Better reliability and easier management
• See https://github.com/mistercrunch/superset-showtime for details

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[github-actions]

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[msyavuz]

Thanks for taking care of this. Hopefully next upgrades will be easier. Have a small nit but i think this looks good

[msyavuz]

LGTM! Checked the changelogs and tested the app with this. I couldn't find any visual issues with the bump

[rusackas]

LGTM!