[AdamZ-8113]

Fixes #10362

Description of the problem being solved:

When previewing an item with different socket colors, PoB recalculated the item’s stats but did not recalculate which gems matched its sockets. It continued using the gem-quality bonuses from the currently equipped item. This made the tooltip disagree with the result after actually equipping the item.

In the example build, Corpse Fletch showed ~69.6k additional Combined DPS in the tooltip but gave ~75.2k after being equipped.

This is because the comparison calculation used the cached socket match state from the equipped item. It now determines matching socket quality from the item used by the calculation, including socket order, and carries that value into the gem quality breakdown.

Steps taken to verify a working solution:

• Loaded the affected build and confirmed Corpse Fletch previews and equips at 564,350.7823 Combined DPS, a gain of 75,217.7758 from the 489,133.0065 base.
• Ran TestGemSocketQuality_spec.lua: 14 successes, 0 failures.
• Ran the full test suite: 585 successes, 0 failures.

Link to a build that showcases this PR:

https://pob.codes/b/gxbNWwV4BXK

Before screenshot:

After screenshot: