client.health.isHealthy() needs documentation on how to use and would expect this to have retries

The SDKs have sidecar health status APIs
- Python is here https://v1-13.docs.dapr.io/developing-applications/sdks/python/python-client/#health-timeout (this an upmerge for current docs)
- Java is here https://v1-13.docs.dapr.io/developing-applications/sdks/java/java-client/#wait-for-sidecar
- .NET here https://v1-13.docs.dapr.io/developing-applications/sdks/dotnet/dotnet-client/#wait-for-sidecar
Note: It would be great if the SDK maintainers could agree on names for API

## Expected Behavior
1) The `client.health.isHealthy() has no documentation on how to use this API. Add to the docs here https://v1-13.docs.dapr.io/developing-applications/sdks/js/js-client/
2) There are no retries on this API as far as I can tell, which does not make it useful. I would either have the Python approach which hides the API on client start (it checks for health) or have a retry like Java and .NET
3) Also this does not see to check the healthx/outbound endpoint, instead does something different on the metadata endpoint. This should be consistent with the other APIs, including ideally in the name.

## Actual Behavior
1) No docs
2)No retries to API
3) Different impl from other SDKs