Fix/multichain react native

[chakra-guy]

Explanation

References

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've highlighted breaking changes using the "BREAKING" category above as appropriate

---

Note

Refactors deeplink handling into RPC client, adds MWP session caching and transport persistence tweaks, updates tests/error messaging, and introduces a new React Native playground app.

• Multichain SDK/Core:
  • Move deeplink triggering for invokeMethod into RPCClient; construct client with full options and support mobile preferredOpenLink.
  • Persist transport type in storage (Browser/MPW) and refine secure/non-secure connect logic; improve deeplink connect flow and error cleanup.
  • Guard window event listeners and fix beforeunload behavior using modal isMounted.
• MWP Transport:
  • Add cached wallet_getSession storage and reuse; write-through on session changes; skip revoke during upgrades; safer window focus reconnect.
• UI:
  • createDeeplink/createUniversalLink accept optional request and return base URLs when absent; share compression logic.
• Tests:
  • Update expectations for cached session behavior and new error message; remove revocation-on-upgrade test.
• Playground:
  • Add playground/multichain-react-native (Expo RN) sample dapp.
• Dependencies:
  • Bump @metamask/mobile-wallet-protocol-core to ^0.3.0; add Expo/RN deps for new playground.

^{Written by Cursor Bugbot for commit 73cb125. This will update automatically on new commits. Configure here.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.99%. Comparing base (7587a0e) to head (73cb125).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1366   +/-   ##
=======================================
  Coverage   74.99%   74.99%           
=======================================
  Files         184      184           
  Lines        4519     4519           
  Branches     1108     1108           
=======================================
  Hits         3389     3389           
  Misses       1130     1130           

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[sonarqubecloud]

Quality Gate passed

Issues
19 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud