Too many info messages appear for some commands

[katelynienaber]

Describe the bug

xyz command submitted info messages are appearing repeatedly for a single call to some commands.

To Reproduce

Try ex. renaming a USS directory/file, as demonstrated here (2 calls to rename, one after the other):

Also maybe check the logic for opening a USS file, it happens a lot when you do this.

But we should probably check on getChildren as well.

Expected behavior

This dialog should only appear once for each call to any command in the context menu. ie. if a command calls getChildren ten times, we should only see one info message for the original command, not ten for all the getChildren calls.

[crawr]

We want to review the error message strings similar to the ones appearing here @IgorCATech

[adam-wolfe]

Number of displayed pop-ups has been significantly reduced, particularly for USS actions.