fix the device performance timing checks for clReleaseContext #412
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Description of Changes
The device performance timing checks were only supposed to happen when the context reference count went to zero, but because the reference count was only queried when call logging was enabled, it was happening much more often. Fix by querying (and updating) the context reference count unconditionally.
Testing Done
Tested with the SYCL llama.cpp with just chrome tracing enabled. Verified that the device performance timing checks did not occur for calls to clReleaseContext.