update of components view takes long time after import

When assets are brought in (for example from Figma) to DS, there is a subtle delay between having the components view populated after the import process has been done.

This leads to user assume importing did not succeed or something

Simple UX improvement

Import ->  Display notification about update of components -> Trigger update for Components view -> close notification once import is complete

=> components view is up-to-date immediately when import is done.