Guard view bugs when updating a pane's input objects

[marceltaeumel]

If the pane already has a model and a view, setting input objects via ViPane >> #objects: will run code unprotected and may spawn a debugger instead of capturing the error within the respective pane.

So, for incompatible views, we want to support both use cases:

ViPane new
   objects: #(1 2 3);
   currentQuery: #someScript asScript; "w/ incompatible view"
   openInHand.

ViPane new
   currentQuery: #someScript asScript;  "w/ incompatible view"
   objects: #(1 2 3);
   openInHand.