chore: V12.7.0 changelog

[benjisclowder]

Description

Adding RC 12.7.0 changelog.

Pre-merge author checklist

• I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards.
• I've completed the PR template to the best of my ability
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[metamaskbot]

Builds ready [0cc1282]

• builds: chrome, firefox
• builds (beta): chrome
• builds (flask): chrome, firefox
• builds (MMI): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• build viz: Build System
• mv3: Background Module Init Stats
• mv3: UI Init Stats
• mv3: Module Load Stats
• mv3: Bundle Size Stats
• mv2: E2e Actions Stats
• code coverage: Report
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5, 6
  • common: 0, 1, 10, 11, 2, 3, 4, 5, 6, 7, 8, 9
  • content-script: 0
  • offscreen: 0
  • ui: 0, 1, 10, 11, 12, 2, 3, 4, 5, 6, 7, 8, 9

Page Load Metrics (1785 ± 57 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	1638	2063	1787	117	56
		domContentLoaded	1596	1988	1755	109	52
		load	1636	2062	1785	118	57
		domInteractive	17	128	49	27	13
		backgroundConnect	11	87	31	19	9
		firstReactRender	48	110	92	18	9
		getState	4	43	9	9	4
		initialActions	0	1	0	0	0
		loadScripts	1170	1469	1310	84	40
		setupStore	10	64	24	20	10
		uiStartup	1806	2325	1971	136	65

Bundle size diffs [🚨 Warning! Bundle size has increased!]

• background: 860 Bytes (0.02%)
• ui: 2.63 KiB (0.03%)
• common: 902 Bytes (0.01%)