Rephrase to leverage parallelism; fixes #4980

rfc9204.md

@@ -523,9 +523,10 @@ it specifies any other value, or omits SETTINGS_QPACK_MAX_TABLE_CAPACITY from
 SETTINGS, the encoder must treat this as a connection error of type
 QPACK_DECODER_STREAM_ERROR.
 
-For HTTP/3 servers and HTTP/3 clients when 0-RTT is not attempted or is
-rejected, the maximum table capacity is 0 until the encoder processes a SETTINGS
-frame with a non-zero value of SETTINGS_QPACK_MAX_TABLE_CAPACITY.
+For clients not using 0-RTT data (whether 0-RTT is not attempted or is rejected)
+and for all HTTP/3 servers, the maximum table capacity is 0 until the encoder
+processes a SETTINGS frame with a non-zero value of
+SETTINGS_QPACK_MAX_TABLE_CAPACITY.
 
 When the maximum table capacity is zero, the encoder MUST NOT insert entries
 into the dynamic table and MUST NOT send any encoder instructions on the encoder