feat: auto-accept agent edits setting auto accept edit tools

[uinstinct]

Description

When auto-accept agent edit setting is turned on, automatically accept the edit tools including findandreplace, multiedit and editexistingfile.

resolves CON-3918

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Checklist

• [] I've read the contributing guide
• [] The relevant docs, if any, have been updated or created
• [] The relevant tests, if any, have been updated or created

Screen recording or screenshot

before.mp4

after.mp4

Tests

[ What tests were added or updated to ensure the changes work as expected? ]

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Summary by cubic

Automatically accepts agent edit tool diffs when the auto-accept setting is enabled, skipping confirmation for Edit Existing File, Single Find & Replace, and Multi Edit calls. Addresses Linear CON-3918 to reduce friction in agent-led edits.

• New Features
  • Checks ui.autoAcceptEditToolDiffs during tool call handling.
  • Auto-approves EditExistingFile, SingleFindAndReplace, and MultiEdit when enabled.

[RomneyDa]

@uinstinct I agree YOLO mode should be expanded to include policies. With this implementation the policy behavior would conflict with the tool policy in the settings page. I think we could do this approach but only if we also show UI (maybe a tooltip/icon) to indicate that the tool policy is forced to automatic by the auto accept edits setting (and show it as automatic and disabled in the policies)