fix(webapp): restyle the leave and remove team member dialogs

[samejr]

Summary

The confirmation dialog for leaving a team or removing a teammate was still built on the old Alert primitive: the entire question sat in the title, there was no header divider or Esc affordance, and the footer used small buttons pinned to the right.

It now uses the standard Dialog layout the rest of the dashboard uses. The title is static ("Remove team member" / "Leave team"), the question moves into the body with the person's name and the organization highlighted, and the footer is a bordered row with medium Cancel and confirm buttons. A member who has not set a name is now identified by their email instead of "them".

Verified against a local dashboard on both dialogs. Confirming a removal posts the member id, deletes the membership and shows the success toast. Cancel, Esc, and Enter while Cancel is focused all close the dialog without issuing a request, leaving the member in place.

No release note needed: this is a visual restyle of an existing dialog with no behaviour change.

[changeset-bot]

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Latest commit: 7e02339

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[coderabbitai]

Walkthrough

Updated team settings confirmation modals from Alert-based layouts to Dialog components. Descriptions now accept JSX content, with styled organization and member identifiers in the leave and removal messages. The removal modal title was changed to “Remove team member,” and the change log was updated to describe the named teammate confirmation.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description is on-topic but misses most required template sections and the issue-closing reference.	Add the Closes #issue line and the missing Checklist, Testing, Changelog, and Screenshots sections from the template.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly describes the main change: restyling the leave/remove team member dialogs.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch samejr/remove-teammate-modal-refresh

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[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.

[samejr]

On the description check: this follows the ## Summary shape used by recent PRs in this repo rather than the contributor template. There is no changelog entry because the change is a visual restyle with no behaviour change, and the testing is described in the summary rather than as a checklist.