[Clang] Fix conflict resolution due to 9606c9ff18f0 (#37526)
The reapply of 9606c9ff18f0 updated some code to keep the addrspacecast
https://github.com/llvm/llvm-project/pull/200427/changes/fb743f12d798a98dd2566bf2c111b502e79e6e5a
. Reverted some of our previous test changes accordingly too. We should
clean up the UseAllocaASForSrets code in follow up JIRA
https://jira.devtools.intel.com/browse/CMPLRLLVM-75358 ASAP. Thanks.
