[lldb] Split up shared cache objc metadata extractor body (llvm#167761)

After my previous change (llvm#167579), the string exceeded 16380
single-byte characters. MSVC did not like this, so I'm splitting it up
into two strings.

Author: bulbazord

lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.cpp

@@ -320,7 +320,7 @@ extern "C"
 static const char *g_get_shared_cache_class_info_name =
     "__lldb_apple_objc_v2_get_shared_cache_class_info";
 
-static const char *g_get_shared_cache_class_info_body = R"(
+static const char *g_get_shared_cache_class_info_definitions = R"(
 
 extern "C"
 {
@@ -411,6 +411,9 @@ struct ClassInfo
     Class isa;
     uint32_t hash;
 }  __attribute__((__packed__));
+)";
+
+static const char *g_get_shared_cache_class_info_body = R"(
 
 uint32_t
 __lldb_apple_objc_v2_get_shared_cache_class_info (void *objc_opt_ro_ptr,
@@ -1962,6 +1965,7 @@ AppleObjCRuntimeV2::SharedCacheClassInfoExtractor::
                       class_name_getter_function_name.AsCString(),
                       class_name_getter_function_name.AsCString());
 
+  shared_class_expression += g_get_shared_cache_class_info_definitions;
   shared_class_expression += g_get_shared_cache_class_info_body;
 
   auto utility_fn_or_error = exe_ctx.GetTargetRef().CreateUtilityFunction(