Recognize namespaced all_image_infos symbol name from dyld

In macOS 12, the symbol name for the dyld_all_image_infos struct
in dyld has a namespace qualifier.  Search for it without qualification,
then with qualification when doing a by-name search.  (lldb will
only search for it by name when loading a user process Mach-O corefile)

rdar://76270013

Author: jasonmolenda

lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.cpp

@@ -251,6 +251,7 @@ bool DynamicLoaderMacOSXDYLD::ReadDYLDInfoFromMemoryAndSetNotificationCallback(
   std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
   DataExtractor data; // Load command data
   static ConstString g_dyld_all_image_infos("dyld_all_image_infos");
+  static ConstString g_new_dyld_all_image_infos("dyld4::dyld_all_image_infos");
   if (ReadMachHeader(addr, &m_dyld.header, &data)) {
     if (m_dyld.header.filetype == llvm::MachO::MH_DYLINKER) {
       m_dyld.address = addr;
@@ -268,6 +269,10 @@ bool DynamicLoaderMacOSXDYLD::ReadDYLDInfoFromMemoryAndSetNotificationCallback(
           dyld_module_sp.get()) {
         const Symbol *symbol = dyld_module_sp->FindFirstSymbolWithNameAndType(
             g_dyld_all_image_infos, eSymbolTypeData);
+        if (!symbol) {
+          symbol = dyld_module_sp->FindFirstSymbolWithNameAndType(
+              g_new_dyld_all_image_infos, eSymbolTypeData);
+        }
         if (symbol)
           m_dyld_all_image_infos_addr = symbol->GetLoadAddress(&target);
       }