Emit better error messages for all dialogs

[tomlm]

Fixes #3980

Description

Change dialogContext to capture exceptions and annotate exception with contextual information about where the exception happened.

Specific Changes

• Add try/catch handlers to dialogContext methods to set Exception.Data["dialogContext'] with metadata about the context that the exception was thrown.

Testing

• Updated existing OnError testing to test and validate for the dialog context data

Example exception metadata

{
   ...,
   "data": 
  {
       "DialogContext": 
       {
            "ActiveDialog": "SetProperty[=`foo`]",
            "Parent": "innerDialog",
           "Stack": [
               "SetProperty[=`foo`]",
               "innerDialog",
               "planningTest"
           ],
       }
}

[Stevenic]

@johnataylor should weigh in as we just had a discussion today about not creating custom exception classes. #Resolved

[tomlm]

I agree, wrapping is not a good approach, I have switched to using Exception.Data to add metadata about context of exception.

---

In reply to: 647899206 [](ancestors = 647899206)

[cleemullins]

@tomlm CAn you resolve the merge conflicts?