Exact Scene Hierarchy search

[HeCorr]

Hello! I think it would be very useful to be able to search for exact matches on the Scene Hierarchy tab.

For example if I search for cliff_medium_arc, then cliff_medium_arc_arid also shows up, as well as any other "starts with" matches, which can be very annoying if there are many.

For the UI implementation, a simple checkbox at the far-right of the checkbox would be perfect.