[LIVE-13575][LLD, LLM][MyLedger]: Filtering of apps depending on feature flag

[ofreyssinet-ledger]

✅ Checklist

• npx changeset was attached.
• Covered by automatic tests.
• Impact of the changes:
  • My Ledger app catalog

📝 Description

Fix & refactor the logic of "is app supported by Ledger Live" depending on feature flags, as well as associated filters in apps catalog.
Now this logic is in one single place and fully unit tested.

The main issue addressed is that for apps that associated to a currency with a feature flag, those apps were totally gone from the catalog if the feature flag was disabled, which shouldn't be the case. The correct behaviour is to filter out those apps only when the filter "Supported in Live" is selected.

❓ Context

• JIRA or GitHub link: LIVE-13575

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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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