Fix quarter date ranges and actual revenue logic in widgets

Quarter-based dashboard presets should use real quarter boundaries, and actual revenue should not include unconfirmed jobs.

Transcript Context

The team reported that quarter presets appear to use approximate date ranges rather than true quarter start and end dates. They also called out that the meaning of "actual" revenue is misleading when it combines confirmed and unconfirmed work. Their expectation was that actual should reflect confirmed revenue only, while unconfirmed work should remain separate because it may move or not close within the selected period.