fix: close network/accounts toasts when opening the Edit page

[jonybur]

Description

This PR fixes the issue where toasts persist after navigating between Permissions view > Edit networks or Edit accounts. The fix ensures the toast dismisses upon navigating to edit in the Permissions modal.

Related issues

Fixes: #27808

Manual testing steps

1. Connect a dapp and grant permissions.
2. Go to the Connection icon > Permissions view > Accounts > Edit.
3. Change the account selection.
4. Update and verify the toast confirms account permissions were updated.
5. Navigate to Networks > Edit.
6. Change the network selection.
7. Update and verify the toast confirms network permissions were updated.
8. Confirm no stale toast persists after each navigation.

Screenshots/Recordings

Before

After

demo.mp4

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., pulled and built the branch, ran the app, tested the 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 [b351d49]

• 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, 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 (1689 ± 77 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	1515	2041	1691	155	75
		domContentLoaded	1481	1996	1664	147	71
		load	1508	2078	1689	160	77
		domInteractive	26	98	45	21	10
		backgroundConnect	9	129	33	29	14
		firstReactRender	16	79	44	25	12
		getState	5	53	15	17	8
		initialActions	0	1	0	0	0
		loadScripts	1082	1580	1237	143	69
		setupStore	6	69	11	13	6
		uiStartup	1725	2450	1932	200	96

Bundle size diffs

• background: 0 Bytes (0.00%)
• ui: 90 Bytes (0.00%)
• common: 0 Bytes (0.00%)

[NidhiKJha]

LGTM

[EtherWizard33]

LGTM