Modifies earlyAbortStreamHandler to include status details if present.

Most use cases of earlyAbortStreamHandler are for circumstances where there are certainly no error details (bad HTTP methods, bad content-type, internal error, etc). However, tap handlers also typically go through the earlyAbortStreamHandler. In http2_server.go:

	if t.inTapHandle != nil {
		var err error
		if s.ctx, err = t.inTapHandle(s.ctx, &tap.Info{FullMethodName: s.method, Header: mdata}); err != nil {
			t.mu.Unlock()
			if t.logger.V(logLevel) {
				t.logger.Infof("Aborting the stream early due to InTapHandle failure: %v", err)
			}
			stat, ok := status.FromError(err)
			if !ok {
				stat = status.New(codes.PermissionDenied, err.Error())
			}
			t.controlBuf.put(&earlyAbortStream{
				// ...
				status:         stat,  // <-- CAN have details!
			})

Yet the handler does not include error details by default, limiting how tap handlers can be used and breaking some user assumptions surrounding which information is propagated.
This PR fixes this by checking for status details and including the header for them if present.

RELEASE NOTES:

• transport: propagate status details from tap handlers.