[lld] [LLD][ARM] Arm v6-m should not use short Thunks. (PR #118111)

[Fangrui Song via llvm-commits]

================
@@ -0,0 +1,57 @@
+// REQUIRES: arm
----------------
MaskRay wrote:

The test passes even without the code change. Is that expected?

https://github.com/llvm/llvm-project/pull/118111