[Smart Accounts KIt] Update docs for v1.6 release

[AyushBherwani1998]

Description

• Update docs for v1.6 release

Issue(s) fixed

Fixes #

Preview

Checklist

• If this PR updates or adds documentation content that changes or adds technical meaning, it has received an approval from an engineer or DevRel from the relevant team.
• If this PR updates or adds documentation content, it has received an approval from a technical writer.

External contributor checklist

• I've read the contribution guidelines.
• I've created a new issue (or assigned myself to an existing issue) describing what this PR addresses.

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Note

Low Risk
Documentation-only changes with no runtime, auth, or contract logic; lowest risk for reviewers and deploys.

Overview
Updates Smart Accounts Kit docs for the v1.6 release, centered on token approval revocation and related API surface.

Adds a new Use approval revocation permission guide and wires it into the Gator sidebar and Supported Advanced Permissions table (including ERC-20/native allowance rows and version gates; revocation is documented as Kit >= v1.6.0 with wallet columns marked unavailable). The Advanced Permissions reference now documents the token-approval-revocation permission type and broadens the intro beyond transfer-only permissions.

Delegation docs gain the approvalRevocation caveat (with CaveatType.ApprovalRevocation in types), plus decodeRevertData / decodeRevertReason and the DecodedRevertReason type for clearer revert handling from framework interactions.

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Project	Deployment	Actions	Updated (UTC)
metamask-docs	Ready	Preview, Comment	May 29, 2026 1:11pm

[shahbaz17]

lgtm