Better compatibility with browser WebSockets for the `JsonRpcSocket` client.

[LiranCohen]

• compatibility for JsonRpcSocket with the native browser WebSocket client.
• enhanced test coverage
• included webSocketServerEnabled in the /info boolean to signal socket support.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 94.45%. Comparing base (e1396cb) to head (3fb95ff).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #116 +/- ## ========================================== + Coverage 94.34% 94.45% +0.10% ========================================== Files 25 25 Lines 2212 2218 +6 Branches 291 296 +5 ========================================== + Hits 2087 2095 +8 + Misses 125 123 -2 ```

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