[lldb][test] Add test for parsing Objective-C synthesized properties

Prior to https://github.com/llvm/llvm-project/pull/164998, recent LLDB
versions would fail to parse synthesized property setters correctly. The
only way this failure would manifest is an error to the console:
```
error: main.o [0x00000000000000cd]: invalid Objective-C method DW_TAG_subprogram (DW_TAG_subprogram), please file a bug and attach the file at the start of this error message
```

There weren't any Objective-C tests that failed when the original regression (https://github.com/llvm/llvm-project/pull/100355) landed. This patch adds a test that explicitly checks that the type of the setter is sensible.

This test fails without https://github.com/llvm/llvm-project/pull/164998
and passes with it.

I decided not to check for the absence of the console error because that kind of test would be fragile to the removal of (or any changes to) the error message.

0 files changed, 0 insertions, 0 deletions