feat(RevyHub): wallet-react-to-freighter-account-changes-withou

[Caneryy]

Closes #60

Summary

• [Wallet] React to Freighter account changes without reloading

Test plan

• Relevant tests pass locally
• Manual verification on affected UI or API paths

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[egekoca]

The added test suite is currently red. npm test fails in tests/wallet/freighterAccount.test.ts at polls for account changes when listeners are unavailable because onUpdate receives zero calls. Lint and build pass. Please fix the polling implementation or deterministic timer/async setup so the new fallback behavior is actually proven, then rerun the full test suite.

[Caneryy]

Thanks for the review @egekoca. Fixed the red test: the fallback poll was correct, but readFreighterAccountState awaits several wallet calls, so a single microtask turn wasn't enough to observe the initial emit. I now drain the microtask queue before the first assertion (kept all assertions intact, including the account-change and unsubscribe checks). Full suite is green again (21 passing) and lint passes.

• npm test → 21 passed
• npm run lint → clean

[egekoca]

Closing: this predates the freighter-connect feature that later shipped on main with a different internal API shape (freighterAccount.ts no longer exports FreighterApi the way this branch's tests expect). The account-change reactivity this PR proposed is superseded by that implementation. Reopen with an update against the current freighter-connect module if there's still a gap it doesn't cover.