chore: copy updates to messages.json

[alidotforrest]

Description

Various content updates based on our content guidelines

Changelog

CHANGELOG entry: N/A

Related issues

Fixes: N/A

Manual testing steps

Only made copy updates.

Screenshots/Recordings

Before

NA

After

NA

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.

---

Note

Refines grammar/punctuation in en/en_GB locale strings and updates related tests/snapshots to match.

• i18n (copy tweaks)
  • Standardize phrasing and punctuation in app/_locales/en/messages.json and app/_locales/en_GB/messages.json (e.g., All-time high/low, remove trailing punctuation in some labels, lowercase "Price impact" tooltip title, add period to smart account switch description, capitalize URL in NFT disclaimer, remove exclamation in install complete, normalize "Learn more").
• Tests
  • Adjust e2e expectation for smart account upgrade text in account-modal-account-type-change.spec.ts.
  • Update confirmation title test to expect period in smart account switch description.
  • Refresh snapshots for NFT details disclaimer and onboarding create-password link text.

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[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.

[alidotforrest]

I have read the CLA Document and I hereby sign the CLA

[alidotforrest]

Submitting this as is since it is simple copy tweaks. @georgewrmarshall -- let me know if you need me to fill this out more in the future!

[georgewrmarshall]

Excellent work on your first PR! These changes look great! We should likely also make them in the British English file too 🙏 app/_locales/en_GB/messages.json

[georgewrmarshall]

Excellent work! LGTM 🚀 I've updated the PR to make linting and unit tests pass. Left one question regarding my knowledge of our content guidelines 🙏

[georgewrmarshall]

I was under the impression we should only use a period for multiple lines of content or when a comma is present. But I just read the updated docs — it looks like the guidance now is to use a period for any complete sentence?

[alidotforrest]

Yes, exactly!