fix: Fix send flow max value issue

[OGPoyraz]

Description

This PR aims to fix send max value issue for redesigned confirmations.

Related issues

Fixes: #29903

Manual testing steps

1. Initiate a native send flow from wallet
2. Click max in the amount picker
3. Go to next step (confirmation)
4. See that value changes when gas is changed

Screenshots/Recordings

SendFlowMaxAmount.mov

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.

[metamaskbot]

Builds ready [ce4e74f]

• 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, 13
  • content-script: 0
  • offscreen: 0

Page Load Metrics (1667 ± 73 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	1469	2092	1672	157	75
		domContentLoaded	1461	2076	1651	150	72
		load	1471	2093	1667	153	73
		domInteractive	24	97	45	24	11
		backgroundConnect	9	74	19	17	8
		firstReactRender	15	97	42	27	13
		getState	4	54	14	15	7
		initialActions	0	1	0	0	0
		loadScripts	1027	1554	1201	134	65
		setupStore	7	80	22	22	10
		uiStartup	1704	2797	1930	238	114

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

• background: 0 Bytes (0.00%)
• ui: 2.37 KiB (0.03%)
• common: 106 Bytes (0.00%)

[sleepytanya]

Max amount is adjusted in response to Gas settings / fluctuations and the Max amount transaction can be successfully sent:

max_amount_gas.mov

gas_settings.mov

[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 [ee78204]

• 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, 13
  • content-script: 0
  • offscreen: 0

Page Load Metrics (1853 ± 151 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	253	2942	1704	583	280
		domContentLoaded	1467	2801	1825	310	149
		load	1510	2847	1853	315	151
		domInteractive	24	240	55	48	23
		backgroundConnect	9	74	30	20	10
		firstReactRender	15	99	49	29	14
		getState	4	69	22	22	11
		initialActions	0	0	0	0	0
		loadScripts	1005	2162	1345	264	127
		setupStore	8	74	18	18	9
		uiStartup	1688	3741	2203	493	237

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

• background: 0 Bytes (0.00%)
• ui: 2.37 KiB (0.03%)
• common: 106 Bytes (0.00%)