[UR][L0] Fix the multi device event cache to allocate lists as pointers

[nrspruit]

• fix to address a multi device crash given many devices causing a stack overflow. Event Caches per device are now explicitly allocated.

• pre-commit PR for [L0] Fix the multi device event cache to allocate lists as pointers oneapi-src/unified-runtime#1366

[nrspruit]

Failure seems unrelated:

# RUN: at line 35
env LD_PRELOAD=/__w/llvm/llvm/build-e2e/ESIMD/regression/Output/complex-lib-lin.cpp.tmp-lib-a.so env ONEAPI_DEVICE_SELECTOR=opencl:gpu  /__w/llvm/llvm/build-e2e/ESIMD/regression/Output/complex-lib-lin.cpp.tmp-a.run
# executed command: env LD_PRELOAD=/__w/llvm/llvm/build-e2e/ESIMD/regression/Output/complex-lib-lin.cpp.tmp-lib-a.so env ONEAPI_DEVICE_SELECTOR=opencl:gpu /__w/llvm/llvm/build-e2e/ESIMD/regression/Output/complex-lib-lin.cpp.tmp-a.run
# note: command had no output on stdout or stderr
# error: command failed with exit status: -11

The failure is with the opencl adapter....

[steffenlarsen]

Windows Gen12:

Failed Tests (8):
  SYCL :: Assert/assert_in_kernels_win.cpp
  SYCL :: Assert/assert_in_multiple_tus_one_ndebug_win.cpp
  SYCL :: Assert/assert_in_multiple_tus_win.cpp
  SYCL :: Assert/assert_in_one_kernel_win.cpp
  SYCL :: Assert/assert_in_simultaneous_kernels_win.cpp
  SYCL :: Assert/assert_in_simultaneously_multiple_tus.cpp
  SYCL :: Assert/assert_in_simultaneously_multiple_tus_one_ndebug.cpp
  SYCL :: Plugin/sycl-ls-unified-runtime.cpp

Reported in #12797 and #12798