Automerge: [lldb][Mach-O] Fix DWARF5 debugging regression for Mach-O

A unification of the DWARF section names,
llvm/llvm-project#141344
broke dwarf5 debugging with Mach-O files.  The str_offset and
str_offset.dwo names are different in Mach-O from other object
files.

Author: jasonmolenda

lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp

@@ -1595,6 +1595,8 @@ static lldb::SectionType GetSectionType(uint32_t flags,
   static ConstString g_sect_name_objc_classlist("__objc_classlist");
   static ConstString g_sect_name_cfstring("__cfstring");
 
+  static ConstString g_sect_name_dwarf_debug_str_offs("__debug_str_offs");
+  static ConstString g_sect_name_dwarf_debug_str_offs_dwo("__debug_str_offs.dwo");
   static ConstString g_sect_name_dwarf_apple_names("__apple_names");
   static ConstString g_sect_name_dwarf_apple_types("__apple_types");
   static ConstString g_sect_name_dwarf_apple_namespaces("__apple_namespac");
@@ -1609,6 +1611,11 @@ static lldb::SectionType GetSectionType(uint32_t flags,
   static ConstString g_sect_name_lldb_formatters("__lldbformatters");
   static ConstString g_sect_name_swift_ast("__swift_ast");
 
+  if (section_name == g_sect_name_dwarf_debug_str_offs)
+    return eSectionTypeDWARFDebugStrOffsets;
+  if (section_name == g_sect_name_dwarf_debug_str_offs_dwo)
+    return eSectionTypeDWARFDebugStrOffsetsDwo;
+
   llvm::StringRef stripped_name = section_name.GetStringRef();
   if (stripped_name.consume_front("__debug_"))
     return ObjectFile::GetDWARFSectionTypeFromName(stripped_name);