Remove confirmation from builder exit

[AustinMroz]

With the move to always storing builder selection changes, the confirmation dialogue on builder exit is no longer needed

┆Issue is synchronized with this Notion page by Unito

[coderabbitai]

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch austin/remove-builder-exit-confirm

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[github-actions]

🎨 Storybook: ✅ Built — View Storybook

Details

⏰ Completed at: 02/27/2026, 07:31:23 PM UTC

Links

• 📊 View Workflow Run

[github-actions]

🎭 Playwright: ✅ 545 passed, 0 failed · 6 flaky

📊 Browser Reports

• chromium: View Report (✅ 532 / ❌ 0 / ⚠️ 6 / ⏭️ 10)
• chromium-2x: View Report (✅ 2 / ❌ 0 / ⚠️ 0 / ⏭️ 0)
• chromium-0.5x: View Report (✅ 1 / ❌ 0 / ⚠️ 0 / ⏭️ 0)
• mobile-chrome: View Report (✅ 10 / ❌ 0 / ⚠️ 0 / ⏭️ 0)

[AustinMroz]

This is a PR directly into #9218

[github-actions]

⚡ Performance Report

No baseline found — showing absolute values.

Metric	Value
canvas-idle: style recalcs	121
canvas-idle: layouts	0
canvas-idle: task duration	400ms
canvas-idle: heap delta	-3.6 MB
canvas-mouse-sweep: style recalcs	179
canvas-mouse-sweep: layouts	12
canvas-mouse-sweep: task duration	911ms
canvas-mouse-sweep: heap delta	-2.2 MB
dom-widget-clipping: style recalcs	43
dom-widget-clipping: layouts	0
dom-widget-clipping: task duration	359ms
dom-widget-clipping: heap delta	6.6 MB

Raw data

{
  "timestamp": "2026-02-27T19:33:26.566Z",
  "gitSha": "3f05a2dd0b8ad5ad57c75b12233389ffe78af204",
  "branch": "austin/remove-builder-exit-confirm",
  "measurements": [
    {
      "name": "canvas-idle",
      "durationMs": 1994.7679999999934,
      "styleRecalcs": 121,
      "styleRecalcDurationMs": 21.204,
      "layouts": 0,
      "layoutDurationMs": 0,
      "taskDurationMs": 400.127,
      "heapDeltaBytes": -3783112
    },
    {
      "name": "canvas-mouse-sweep",
      "durationMs": 1957.3000000000036,
      "styleRecalcs": 179,
      "styleRecalcDurationMs": 57.21999999999999,
      "layouts": 12,
      "layoutDurationMs": 4.024,
      "taskDurationMs": 910.6550000000001,
      "heapDeltaBytes": -2350848
    },
    {
      "name": "dom-widget-clipping",
      "durationMs": 579.5359999999903,
      "styleRecalcs": 43,
      "styleRecalcDurationMs": 13.982000000000001,
      "layouts": 0,
      "layoutDurationMs": 0,
      "taskDurationMs": 358.78,
      "heapDeltaBytes": 6947716
    }
  ]
}