Attempting to load an invalid GBNF crashes Home Assistant

[acon96]

Describe the bug
If you attempt to load a GBNF grammar file that is invalid syntax, the llama-cpp-python C extension crashes the entire Home Assistant process and must be restarted.

Expected behavior
An error message would tell the user that the grammar file is invalid.

Logs
N/A

[joelis10]

crashes on setup for me too, not sure if its due to GBNF values though