RBTools has an annoying architectural quirk that API calls somewhat deep

in the code can trigger login prompts. This wasn't an issue back when

all we had was regular text output, but it became a thing when we

introduced tqdm for progress bars, and is even worse with how rich

does certain output. This was causing extremely ugly displays when

trying to do an rbt post when logged out. The progress bar would be

shown, the prompt text would then show at the end of the same line as

the progress bar, and then another progress bar update would display

below it, making the prompt very unclear.
This change makes it so any live activities will get temporarily hidden

during any prompts.

Ran unit tests.
Logged out and ran rbt post. Saw that the output now looked nice.