Revert "[lldb] Remove redundant .c_str() and .get() calls"

This reverts commit fbaf48be0f.

This has broken all LLDB buildbots:
https://lab.llvm.org/buildbot/#/builders/68/builds/44990
https://lab.llvm.org/buildbot/#/builders/96/builds/33160

lldb/source/Plugins/Process/scripted/ScriptedProcess.cpp

@@ -104,7 +104,7 @@ ScriptedProcess::ScriptedProcess(
   ExecutionContext exe_ctx(target_sp, /*get_process=*/false);
 
   StructuredData::GenericSP object_sp = GetInterface().CreatePluginObject(
-      m_scripted_process_info.GetClassName(), exe_ctx,
+      m_scripted_process_info.GetClassName().c_str(), exe_ctx,
       m_scripted_process_info.GetArgsSP());
 
   if (!object_sp || !object_sp->IsValid()) {