servlet: tomcat does not support trailer only

gRPC version:
1.53.0
gRPC server transport: servlet
gRPC client transport: netty

### What is your environment?
MacOS 12.4 jdk11

### What did you expect to see?
This is a known behaviour where tomcat sends an empty data frame with a end_stream flag instead of a trailer only frame with end_stream flag. While it is a valid http2 behaviour, this is not supported by gRPC who expected end_stream frames to be sent in trailer or trailer-only frame.

### What did you see instead?
Internal status error because a data frame is end_stream

### Steps to reproduce the bug
The transport tests `earlyServerClose_noServerHeaders`, `earlyServerClose_serverFailure` and `earlyServerClose_serverFailure_withClientCancelOnListenerClosed` reproduce the problem