Consider cards already reviewed that day when calculating new/review ratio?

Originally reported on https://forums.ankiweb.net/t/dont-rebuild-queue-on-selecting-another-deck/48349/10

Start with the linked forum discussion to understand the reported queue and ratio behavior, then locate where the new/review ratio is calculated. Clarify whether cards reviewed earlier that day should be included, agree on the expected behavior, and add coverage for the decided case.

Written by the indexing model from the issue text.