[Do not merge this yet] Hide toolbar when an AOI is created

[AliceR]

Based on our discussions around improving the user experience when creating a new AOI after a shape has already been drawn, this PR introduces an alternative user flow:

• Users can only create a new AOI (via selection, drawing, or uploading) after deleting the existing one.
• While an AOI is present, the toolbar for creating new AOIs will be hidden, reducing the risk of unintentional overwrites and clarifying the workflow.

This proposal is a variation (Version B ☺️) of the current approach in #1395 (Version A). It emphasizes deliberate action on the part of the user, ensuring that any new AOI creation starts from a clean slate.

Feedback on whether this alternative flow better aligns with user needs would be greatly appreciated! We could even run some A/B testing with both of the deploy preview links!

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[j08lue]

I understand the intention to make it explicit to users that they need to delete the current AOI to be able to draw or select a new one.

However, what the user actually wants is more like "Start over" or "Draw or select a new AOI". Not delete. I don't think anyone ever only wants "delete" - why would you delete if you do not want to draw or select a new AOI?

So I think the idea is good to make it clear that there can only be one AOI and if you want a different one, you are effectively starting over.

But the delete button will be a blocker, because users are looking to do something else - ultimately the draw/select UI again.

[faustoperez]

I agree with Jonas, the presence of the delete area button is still a bit wonky. I don't think we have the flow figured out yet. Looks good though, since this is one side of an A/B test

[aboydnw]

I agree with the comments above. I think there is something here, but see my comment in #1395

Open to either path forward, though, so raise your hand if you're in strong disagreement. Just trying to break up the ice a bit to get things flowing here.