Auto Complete Warns on Parser Lexical Errors

[nbauernfeind]

Simply typing ` in a groovy REPL box drops this warning from the server:

2023-09-07T00:11:30.858Z | orinmemory://model/1 |  WARN | i.d.l.parse.PendingParse  | Parser for inmemory://model/1: Encountered parse exception io.deephaven.lang.generated.TokenMgrException: Lexical error at line 1, column 2.  Encountered: <EOF> after : ""
	at io.deephaven.lang.generated.ChunkerTokenManager.getNextToken(ChunkerTokenManager.java:2377)
	at io.deephaven.lang.generated.Chunker.getToken(Chunker.java:4363)
	at io.deephaven.lang.generated.Chunker.Document(Chunker.java:156)
	at io.deephaven.lang.parse.PendingParse$ParseJob.parse(PendingParse.java:72)
	at io.deephaven.lang.parse.PendingParse.parse(PendingParse.java:162)
	at java.base/java.lang.Thread.run(Thread.java:832)
 while parsing `

I'd like to hide this logging behind a DEBUG flag.