[LLM] Promise.allSettled polyfill

[lvndry]

📝 Description

Some of the libraries we use on LLM use Promise.allSettled however it's not supported natively in mobile environment. So we use add this polyfill to add the support

❓ Context

• JIRA or GitHub link: https://ledgerhq.atlassian.net/browse/LIVE-11636

✅ Checklist

Pull Requests must pass the CI and be code reviewed. Set as Draft if the PR is not ready.

• npx changeset was attached.
• Covered by automatic tests.
• Impact of the changes:
  • ...

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🧐 Checklist for the PR Reviewers

• The code aligns with the requirements described in the linked JIRA or GitHub issue.
• The PR description clearly documents the changes made and explains any technical trade-offs or design decisions.
• There are no undocumented trade-offs, technical debt, or maintainability issues.
• The PR has been tested thoroughly, and any potential edge cases have been considered and handled.
• Any new dependencies have been justified and documented.
• Performance considerations have been taken into account. (changes have been profiled or benchmarked if necessary)

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[gre]

it is possible that an higher version of Hermes solves this, facebook/hermes#766 (comment)
but i wonder if we are on latest Hermes, maybe updating it would help 🤔 but i think it means a RN update and it's big, so for now we can go with this polyfill and add ourself a reminder that we may be able to remove in future.

[hzheng-ledger]

looks good to me!