fix(snaps): Remove arrows of custom UI inputs

[GuillaumeRx]

Description

This PR removes the HTML arrows in custom UI inputs of type number.

Related issues

Fixes:

Manual testing steps

import {
  Box,
  Button,
  Container,
  Footer,
  Heading,
  Input,
  Text,
  type SnapComponent,
} from '@metamask/snaps-sdk/jsx';

/**
 * A custom dialog component.
 *
 * @returns The custom dialog component.
 */
export const CustomDialog: SnapComponent = () => (
  <Container>
    <Box>
      <Input name="number-input" type="number" />
    </Box>
    <Footer>
      <Button name="cancel">Cancel</Button>
      <Button name="confirm">Confirm</Button>
    </Footer>
  </Container>
);

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]

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[metamaskbot]

Builds ready [c099817]

• 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, 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 (1737 ± 39 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	1601	1894	1733	80	38
		domContentLoaded	1583	1848	1702	71	34
		load	1635	1894	1737	81	39
		domInteractive	18	85	43	18	9
		backgroundConnect	11	75	36	18	9
		firstReactRender	45	202	98	42	20
		getState	7	66	23	21	10
		initialActions	0	1	0	0	0
		loadScripts	1150	1364	1236	57	27
		setupStore	10	99	29	26	13
		uiStartup	1793	2281	1949	116	56

Bundle size diffs

• background: 0 Bytes (0.00%)
• ui: 211 Bytes (0.00%)
• common: 0 Bytes (0.00%)

[metamaskbot]

Builds ready [6407e2a]

• 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, 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 (1914 ± 176 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	462	3358	1850	491	236
		domContentLoaded	1566	2468	1823	203	97
		load	1579	3293	1914	366	176
		domInteractive	15	75	43	21	10
		backgroundConnect	10	879	95	192	92
		firstReactRender	46	212	103	47	23
		getState	4	171	20	37	18
		initialActions	0	1	0	0	0
		loadScripts	1120	1658	1343	125	60
		setupStore	11	212	50	47	23
		uiStartup	1760	3534	2203	482	231

Bundle size diffs

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