Change GEN to boost calculation

[EzraWeller]

Is your feature request related to a problem? Please describe.

This is not a huge problem, but this is a simple proposed fix that may help UX considerably if there are no issues with it.

Describe the solution you'd like
The "GEN required to boost" amount on a regular proposal should count all proposals currently in pending as boosted, to avoid the confusing situation where a proposal goes into pending, the boosting threshold goes up, and the pending proposal no longer meets the threshold and must be moved back to the regular queue.

This may sometimes overestimate the actual cost to boost, but it's probably worth it.

Describe alternatives you've considered
Changing the protocol, which is much harder.

Additional context
Add any other context or screenshots about the feature request here.

[jellegerbrandy]

Ezra, can you confirm that we REALLY want this?

[EzraWeller]

I think it's definitely worth getting in a test environment and seeing how it feels -- it could be a pretty significant improvement if it works well.