fix: add alert when selected account is different from signing account in confirmation

[jpuri]

Description

Show warning when signing account in confirmation is different from currently selected account in MM.

Related issues

Fixes: #28015

Manual testing steps

1. Go to test dapp and connect with an account
2. Switch to a different account
3. Submit a confirmation and check warning next to signing account

Screenshots/Recordings

Signature Request:

Contract Interaction:

Send token:

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 [94786bc]

• 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, 7
  • common: 0, 1, 10, 11, 12, 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 (1827 ± 105 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	1503	2322	1832	212	102
		domContentLoaded	1493	2245	1794	195	94
		load	1505	2338	1827	218	105
		domInteractive	14	79	36	14	7
		backgroundConnect	7	99	34	32	15
		firstReactRender	55	299	93	56	27
		getState	43	201	89	37	18
		initialActions	0	0	0	0	0
		loadScripts	1057	1725	1343	165	79
		setupStore	6	36	9	6	3
		uiStartup	1873	2732	2141	254	122

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

• background: 0 Bytes (0.00%)
• ui: 3.63 KiB (0.05%)
• common: 229 Bytes (0.00%)

[metamaskbot]

Builds ready [417e532]

• 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, 7
  • common: 0, 1, 10, 11, 12, 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 (1900 ± 72 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	219	2220	1749	523	251
		domContentLoaded	1652	2148	1855	133	64
		load	1673	2235	1900	150	72
		domInteractive	17	85	46	19	9
		backgroundConnect	11	114	50	27	13
		firstReactRender	68	309	119	52	25
		getState	4	75	23	21	10
		initialActions	0	0	0	0	0
		loadScripts	1160	1654	1362	120	58
		setupStore	6	84	16	20	9
		uiStartup	1870	2578	2162	194	93

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

• background: 0 Bytes (0.00%)
• ui: 3.63 KiB (0.05%)
• common: 229 Bytes (0.00%)

[metamaskbot]

Builds ready [ad1b26f]

• 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, 7
  • common: 0, 1, 10, 11, 12, 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 (1813 ± 65 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	1651	2256	1824	131	63
		domContentLoaded	1606	2230	1790	132	63
		load	1653	2259	1813	135	65
		domInteractive	18	189	41	35	17
		backgroundConnect	11	92	28	20	10
		firstReactRender	53	141	98	25	12
		getState	5	58	14	16	8
		initialActions	0	1	0	0	0
		loadScripts	1161	1518	1318	88	42
		setupStore	6	59	16	19	9
		uiStartup	1819	2521	2019	154	74

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

• background: 0 Bytes (0.00%)
• ui: 5.94 KiB (0.08%)
• common: 229 Bytes (0.00%)