[llvm] [SPIRV] Change how to detect OpenCL/Vulkan Env and update tests accordingly. (PR #129689)

[Nathan Gauër via llvm-commits]

================
@@ -405,13 +405,13 @@ bool SPIRVPrepareFunctions::substituteIntrinsicCalls(Function *F) {
         Changed = true;
         break;
       case Intrinsic::lifetime_start:
-        if (STI.isOpenCLEnv()) {
+        if (!STI.isShaderEnv()) {
----------------
Keenuts wrote:

```suggestion
        if (STI.isKernelEnv()) {
```

https://github.com/llvm/llvm-project/pull/129689