Changes to the calculation of speed and flow aim difficulty

[TextAdventurer12]

This contains a handful of changes:

• an attempt to stop the double-dipping of spaced streams into speed and aim pp by reducing aim pp if spacing is less than the single spacing bonus
• a nerf to the speed bonus
• an angle bonus for distance in speed calculation
• an increase to strain decay base for speed, resulting in a buff to longer streams

Values when combined with the other difficulty calculation changes (#28843 + #28844 + #28845 + #28846) can be seen here (onion access only)

[smoogipoo]

!diffcalc

[github-actions[bot]]

Target: https://github.com/ppy/osu/pull/28846 Spreadsheet: https://docs.google.com/spreadsheets/d/1YMAOw1C9m15_wzggBQTbN3b2WhX9Upa1LH7pLJZl_Ko/edit

[smoogipoo]

!diffcalc

[github-actions[bot]]

Difficulty calculation failed: https://github.com/ppy/osu/actions/runs/9985735036

[smoogipoo]

!diffcalc

[github-actions[bot]]

Difficulty calculation failed: https://github.com/ppy/osu/actions/runs/10002689393

[smoogipoo]

!diffcalc

[github-actions[bot]]

Difficulty calculation failed: https://github.com/ppy/osu/actions/runs/10004243543

[TextAdventurer12]

moved back to draft while I work through some feedback

[TextAdventurer12]

closing this because it underwent changes on another branch alongside some other changes