Hello,
If there is no interrupt priority set, the interrupt wont be called.

You can have a look at reference example:
https://community.nxp.com/docs/DOC-329575
You can have a look at interrupt processing in reference manual: 21.6.3 Handshaking with processor
I cant speak for unknown example in SDK. Its better always to understand how the interrupt is processed from some bare die example project or manual.
Best regards,
Peter