[Bench] Separate group for native SubmitGraph cases and adjust naming (#21160)
Fixes the SubmitGraph display issues in the benchmark dashboard with the
following adjustments:
- The "graph emulation" naming has been switched, and L0 / UR graph
benchmarks are referred to as "native recording" to align with what we
plan to call this feature in SYCL.
- Due to technical differences in the underlying APIs, native graph APIs
are assigned their own grouping as cross-comparing may lead to false
performance conclusions.
---------
Signed-off-by: Matthew Michel <matthew.michel@intel.com>