[SYCL][Graph] Enable Graphs with L0 immediate command-list (#12279)
Updates e2e tests to test L0 immediate command-lists.
Improves filecheck usage in graph E2E tests
Removes test that checks immediate command-list exception.
Updates the spec.
Addresses Issue: #10467
---------
Co-authored-by: Ben Tracy <ben.tracy@codeplay.com>
Author
Maxime France-Pillois