[UR][Spec Constants] Improved handling of invalid/unsupported spec. constants (#13204)

Pre-commit MR for
oneapi-src/unified-runtime#1469

---------

Co-authored-by: Aaron Greig <[email protected]>

Author: RossBrunton

sycl/cmake/modules/FetchUnifiedRuntime.cmake

@@ -117,13 +117,13 @@ if(SYCL_UR_USE_FETCH_CONTENT)
   endfunction()
 
   set(UNIFIED_RUNTIME_REPO "https://github.com/oneapi-src/unified-runtime.git")
-  # commit 4814e505335bfb968ea905d76e5b978f6f4d0002
-  # Merge: d977bd76 aa53a35d
+  # commit 22ef899035a85b70b5472416ad6db8021effb5c1
+  # Merge: 4814e505 f5979a68
   # Author: aarongreig <[email protected]>
-  # Date:   Fri Oct 11 16:05:19 2024 +0100
-  #     Merge pull request #2090 from RossBrunton/ross/harden
-  #     Hardening flags
-  set(UNIFIED_RUNTIME_TAG 4814e505335bfb968ea905d76e5b978f6f4d0002)
+  # Date:   Mon Oct 14 10:03:13 2024 +0100
+  #     Merge pull request #1469 from RossBrunton/ross/specconst
+  #     [Spec Constants] Improved handling of invalid spec. constants
+  set(UNIFIED_RUNTIME_TAG 22ef899035a85b70b5472416ad6db8021effb5c1)
 
   set(UMF_BUILD_EXAMPLES OFF CACHE INTERNAL "EXAMPLES")
   # Due to the use of dependentloadflag and no installer for UMF and hwloc we need