The GrpcClient constructor should add http2ClearTextUpgrade(false) to passed HttpOptions

### Version

4.3.7

### Context

The GrpcClient constructors allow you to pass in custom HttpOptions.

Because `httpOptions.setHttp2ClearTextUpgrade(false)` must be set, the constructor should do it for you, like the default constructor does.

### Steps to reproduce

1. Create a client with `GrpcClient.client(vertx, new HttpClientOptions())`.
2. Observe the server replies with an unexpected HTTP/1.1 protocol error.
3. Observe `GrpcClient.client(vertx, new HttpClientOptions().setHttp2ClearTextUpgrade(false))` resolves the issue.

This is a known issue. It is never valid to have this set to `true` (or the default) on a GrpcClient.