fix: Allow outerclick to close import modal

[darkwing]

Description

Clicking outside of modals is generally an assumed "now close the modal" interaction.

Related issues

Fixes:

Manual testing steps

1. Open the Import Tokens modal
2. Click the background
3. See the modal go away

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 [b800d6a]

• 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 (1815 ± 64 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	502	2098	1736	309	148
		domContentLoaded	1620	2063	1772	115	55
		load	1631	2108	1815	132	64
		domInteractive	13	78	41	16	8
		backgroundConnect	9	164	46	42	20
		firstReactRender	49	477	140	100	48
		getState	4	59	20	18	9
		initialActions	0	0	0	0	0
		loadScripts	1114	1507	1291	104	50
		setupStore	5	80	22	27	13
		uiStartup	1827	2912	2119	274	131

Bundle size diffs

• background: 0 Bytes (0.00%)
• ui: -26 Bytes (-0.00%)
• common: 0 Bytes (0.00%)