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. Testing Done: - Ran unit tests. - Logged out and ran `rbt post`. Saw that the output now looked nice.