SIWE | Sign-in With Ethereum - Add Ledger Instructions

[digiwand]

Explanation

Fixes #18552

The original implementation was missing the Ledger instructions. This PR adds the supporting component.

Screenshots/Screencaps

Before

(see Issue related #18552)

After

Manual Testing Steps

1. Connect with Ledger
2. Create sign-in with ethereum request
3. Observe ledger instructions UI

Pre-merge author checklist

• I've clearly explained:
  • What problem this PR is solving
  • How this problem was solved
  • How reviewers can test my changes
• Sufficient automated test coverage has been added

Pre-merge reviewer checklist

• Manual testing (e.g. pull and build branch, run in browser, test code being changed)
• PR is linked to the appropriate GitHub issue
• IF this PR fixes a bug in the release milestone, add this PR to the release milestone

If further QA is required (e.g. new feature, complex testing steps, large refactor), add the Extension QA Board label.

In this case, a QA Engineer approval will be be required.

[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 [f2834fc]

• builds: chrome, firefox
• builds (beta): chrome, firefox
• builds (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
  • common: 0, 1, 2, 3, 4, 5
  • content-script: 0
  • contentscript: contentscript
  • disable-console: disable-console
  • inpage: inpage
  • policy-load: policy-load
  • sentry-install: sentry-install
  • ui: 0, 1, 10, 11, 2, 3, 4, 5, 6, 7, 8, 9

Page Load Metrics (1967 ± 99 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	103	190	137	22	11
		domContentLoaded	1562	2291	1952	198	95
		load	1562	2336	1967	207	99
		domInteractive	1562	2291	1952	198	95

Bundle size diffs

• background: 0 bytes
• ui: 488 bytes
• common: 0 bytes

[NiranjanaBinoy]

I don't have a ledger, so I haven't tested this. But the code changes look good, so I am approving this one.

[digiwand]

thanks for the reviews!