Issue description
Example: When providing medical 3 (1 unity base) to a tier 4 settlement (125% unity bonus on certain inputs) that is missing one of the core needs that grant the tier unity bonus, both the "Population overview" and housing building UI do not show the unity value gained from medical as orange to show that the unity throughput is being limited.
Expected behavior in "Population overview" is that the "Hospitals" row would display its value in orange and show the "Maximum can be increased further by reaching a higher housing bonus" message when hovered.
Reproduction steps
Provide a higher tier settlement with only some of the required needs to fulfill the tier unity benefit. Provide medical and check unity gain.
Game version and build number
v0.8.7
Operating system
Windows