chore: Rename ControllerMessenger to Messenger

[cryptodev-2s]

Description

Rename RestrictedControllerMessenger to RestrictedMessenger and ControllerMessenger to Messenger.

No functional changes.

Related issues

Fixes:

Relates to #4538

Manual testing steps

Screenshots/Recordings

Before

After

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 [178b7ce]

• builds: chrome, firefox
• builds (flask): chrome, firefox
• builds (MMI): chrome
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• build viz: Build System
• mv3: Bundle Size Stats
• mv2: E2e Actions Stats
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5, 6, 7
  • common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
  • ui: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
  • content-script: 0
  • offscreen: 0

Page Load Metrics (1676 ± 76 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	1464	2037	1677	162	78
		domContentLoaded	1453	1990	1643	152	73
		load	1464	2041	1676	159	76
		domInteractive	23	79	35	17	8
		backgroundConnect	10	81	32	20	10
		firstReactRender	15	76	32	23	11
		getState	4	59	18	18	9
		initialActions	0	1	0	0	0
		loadScripts	1033	1417	1185	113	54
		setupStore	7	57	18	18	8
		uiStartup	1625	2249	1889	182	87

Bundle size diffs [🚀 Bundle size reduced!]

• background: -20 Bytes (-0.00%)
• ui: 0 Bytes (0.00%)
• common: 0 Bytes (0.00%)

[ccharly]

LGTM (for accounts owned files).

[OGPoyraz]

Confirmation changes looks good.