Disjointpool seqfaults if parameters are NULL.

[lplewa]

Other pools uses default config(tbh only jmalloc, and disjoint uses any parameters). For sure we should not throw seqfault. as easy fix can just return einval, but we might consider going with some default configuration if possible

[pbalcer]

https://github.com/oneapi-src/unified-runtime/blob/568a96aabc6edabe8514ae163aecc64cd5a41878/source/common/umf_pools/disjoint_pool_config_parser.cpp#L28