feat: remove auto-accept edits setting

[uinstinct]

Description

Automatically accept all edit file tools (edit existing file, single find and replace, multi-edit) because accept/reject file diffs will be shown for them anyway.

resolves CON-4427

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Summary by cubic

Automatically auto-approve file edit tools and remove them from policy controls. Users still see diffs to accept or reject. Resolves CON-4427.

• New Features
  • Edit tools (edit file, single find/replace, multi-edit) are always allowed without permission; diffs remain for approval.
  • Removed the autoAcceptEditToolDiffs setting dependency.
  • Hidden edit tools from the Tool Policies UI to avoid misleading controls.

[cubic-dev-ai]

No issues found across 4 files

[RomneyDa]

@uinstinct looks like just pending tests! GUI edit tests account for policies

[RomneyDa]

@uinstinct instead of hiding edit tools from policies, can we just get rid of the auto-accept agent edits setting entirely?