[#6433] Error in AdaptiveDialog.ContinueActionAsync with native dialog SDK

[Joel Mut (sw-joelmut)]

Fixes #6433

Description

This PR fixes an issue where the ComponentDialog cannot be found in the Dialogs stack and in the ResourceExplorer when using AdaptiveDialogs, adding a condition to evaluate the resource existence before trying to load it into the dialogs stack.
Additionally, it reworks the solution to load the dialog resource from the DialogContext instead when it cannot find the dialog (more information can be found in this comment).

Specific Changes

• Adds a pre-condition before trying to load the dialog from the ResourceExplorer.
• Added a unit test validating the new condition when using ComponentDialogs with AdaptiveDialogs.
• Added FindDialog method in the AdaptiveDialog class, that detects when there is no Dialog in the stack, it loads it from the ResourceExplorer.
• Added unit test that handles bot reconnection and resumes the conversation.
• Updated the DialogContext.FindDialog method to detect when the AdaptiveDialog cannot be found, delegate the search to the AdaptiveDialog class.
• Updated the AdaptiveDialog_LoadDialogFromProperty.test.dialog unit test, validating the new condition.
• Removed previous implementation in BaseInvokeDialog and AdaptiveDialog related to the PRs (# 6338, # 6365).

Testing

The following image shows the new unit tests passing and the conversation samples detecting the LUIS Activity.

[Joel Mut (sw-joelmut)]

Hi @MatteoMilanese, Eric Dahlvang (@EricDahlvang), johnataylor, Sébastien BIAUDET (@sbiaudet), @ramfattah, tracyboehrer (@tracyboehrer).

The past few days, we've been looking for a way to solve the issue described by @MatteoMilanese in this comment.
We were able to reproduce the issue described in the comment, and the solution we found is to let the DialogContext class detect when the AdaptiveDialog couldn't be found in the dialogs stack and allow the Parent dialog to find it.
Moreover, the AdaptiveDialog class will include a second FindDialog method, so in case the Dialog cannot be found, gather it from the ResourceExplorer.

Additionally, we already pushed the changes and updated the PR's description.

Note: Previous implementations made in the PRs (#6338, #6365) have been removed (except unit tests), as they are no longer being evaluated.

Thanks

[BruceHaley]

✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.Dialogs.dll