[llvm] [llvm-objcopy] MachO: Fix section finding policy for object files (PR #127604)

[Alexander Shaposhnikov via llvm-commits]

================
@@ -0,0 +1,30 @@
+	.section	__TEXT,__text,regular,pure_instructions
----------------
alexander-shaposhnikov wrote:

sketch:
```
.section	__TEXT,__text
   .space	64
.section	__DATA,__storage
  .space 64
```
(everything else can be dropped)

https://github.com/llvm/llvm-project/pull/127604