[TF2] Fixed several UI being unable to pull paintkit index/pattern name for War Painted weapons

[rabscootle]

Partial fix for ValveSoftware/Source-1-Games#3520

This PR is a newer, less lazy approach to what was previously done in the now-outdated #856.

This PR fixes item names not constructing properly when handling war-painted items in certain UI (Player Status HUD, Target ID):

When paired with #1756, War Paint items should have full feature parity with existing Decorated Weapons and will display War Paint name + Rarity Color in affected UI:

When dealing with dropped weapons, the live TF client currently typically points to static data in the item schema for weapon details, including paint kit index IDs. However, War Paint weapons bypass requiring their own respective schema entries by having attributes applied to individual instances of generic paintkit weapon entries. This approach breaks some UI code where it is expecting the attributes to be on the item schema definition:

Game code has been updated to store a paintkit index within CGameItemDefinition_EconItemInterfaceWrapper, which can be referenced in situations where we cannot point to an actual item instance.

A side effect of this fix is that item qualities will now properly display on constructed item names in the affected UI, which was caused by a missing argument.

[kisak-valve]

Minor side note that you can give me a ping and request adjustments if GitHub isn't being reasonable. This and #1792 could have been a git force push to the git branch you were using when you opened #856 and adjusting the description. Having written that, since we've already gotten to this point, there's no point in more housekeeping.

[rabscootle]

Sorry! This is where I am still learning Git, will account for this next time.