fix: Use useCallback for domain input in Send flow

[darkwing]

Description

The DomainInput was being re-rendered because the event callbacks weren't using useCallback. This PR prevents those re-renders.

Related issues

Fixes:

Manual testing steps

1. Go to send flow
2. Ensure pasting into the domain field, typing a valid address, etc. works properly

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 [671ee33]

• 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, 8
  • common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
  • ui: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
  • content-script: 0
  • offscreen: 0

Page Load Metrics (1975 ± 72 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	414	2307	1896	371	178
		domContentLoaded	1712	2217	1936	143	69
		load	1752	2315	1975	149	72
		domInteractive	27	63	36	9	4
		backgroundConnect	14	105	46	28	14
		firstReactRender	15	68	34	21	10
		getState	5	67	23	20	10
		initialActions	0	1	0	0	0
		loadScripts	1305	1679	1474	115	55
		setupStore	8	55	15	13	6
		uiStartup	1991	3041	2270	266	128

Bundle size diffs

• background: 0 Bytes (0.00%)
• ui: 153 Bytes (0.00%)
• common: 0 Bytes (0.00%)