[compiler-rt] [llvm-lit] Add REQUIRES: shell in compiler-rt tests that use the `ulimit` command in lit internal shell (PR #105339)

[Paul Kirth via llvm-commits]

================
@@ -7,7 +7,7 @@
 // Limit this test to Linux since we're relying on allocator internal
 // limits (shadow memory size, allocation limits etc.)
 
-REQUIRES: shell
+REQUIRES : shell
----------------
ilovepi wrote:

```suggestion
REQUIRES: shell
```
I don't think this will work w/ the whitespace. Also, please restore the other lines. `git clang-format` will make sure it only format's the lines you changed. This applies to all the files in this patch.

https://github.com/llvm/llvm-project/pull/105339