Producing units with capacity does not contribute to current production's capacity limit

[sirrus233]

Example:

• If my space dock can support 3 fighters, it is illegal to build 6 fighters (3 will be destroyed)
• But building 6 fighters and a carrier is acceptable, because the carrier contributes its capacity immediately.

This is perhaps somewhat tricky to implement without expanding scope further, because TI4 plays with capacity values a bit across factions (see: Sol carriers, Argent destroyers, L1Z1X dreadnoughts, etc.)

[chelseaSchmidt]

Super good catch, and is another layer of trickiness capacity increasing with upgrades? Maybe a short-term implementation could be when the user produces greater than 0 of a unit, pop up a form field next to the counter where they can input a capacity value? Don't know if that feels too messy