Fix syntax test tab dialog appearing on navigating test files using Goto Anything.

[UltraInstinct05]

This PR fixes a situation where navigating syntax test files using Goto Anything can be disruptive. Since the view is loaded and PD throws the dialog for those files that use tabs in test files, this results in a bad UX.

To prevent this, we simply skip files that are transiently loaded when navigating Goto Anything.

Fixes #350, fixes #177

[FichteFoll]

I have two issues with this:

1. With where you inserted the check, automatic syntax assignment is skipped. I want to keep that.
2. We need a way to detect when the view has been properly opened and then run the check. I know it's annoying in general, but as I stated in You MUST use spaces! error: Syntax tests do not work properly with tabs as indentation. #177 I want it to be annoying - just not while using Goto Anything and for transient views. As a general idea, I think we can start a set_timeout loop that checks whether a view id is still valid and if yes, whether the respective sheet isn't transient anymore.

[UltraInstinct05]

With where you inserted the check, automatic syntax assignment is skipped. I want to keep that.

Shouldn't be an issue. All I need to do is move the check down.

We need a way to detect when the view has been properly opened and then run the check. I know it's annoying in general, but as I stated in You MUST use spaces! error: Syntax tests do not work properly with tabs as indentation. #177 I want it to be annoying - just not while using Goto Anything and for transient views. As a general idea, I think we can start a set_timeout loop that checks whether a view id is still valid and if yes, whether the respective sheet isn't transient anymore.

Meaning, when a user promotes the transient view (of the Goto Anything) to a regular view, you want the indentation check to take place ?