Suppress vanilla dialogue

I don't have a full list of this but one example is the top of spiral mountain at the bridge repair spot, and another is bottles telling you how many moves you're still missing from a level. These don't need to exist in rando.

Start by locating how vanilla dialogue is selected and displayed in randomizer mode, then inventory the examples in the issue: the Spiral Mountain bridge repair spot and Bottles' remaining-moves messages. Done means the identified vanilla dialogue no longer appears in rando, with the final scope and affected cases documented or covered by the project's existing checks.

Written by the indexing model from the issue text.