Fix stat differences for granted skills

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• I'm running the latest version of Path of Building and I've verified this by checking the changelog

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• I've checked for duplicate open and closed issues by using the search function of the issue tracker

What platform are you running Path of Building on?

Windows

How is Path of Building expected to behave?

When I have a unique item equipped which grants a skill, sorting the uniques by damage for the given slot should list that specific unique at the top (and any other uniques, if there are multiple which grant the same skill), and every other unique should be -100% damage for the given skill (since they do not grant it).

As an example, if I have Abberath's Hooves equipped, it grants the Abberath's Fury skill. If I select this skill on the left and sort the unique boots by average hit, every item other than Abberath's Hooves should be at -100%.

This should apply to every case of granted skills:

• uniques like Abberath's Hooves
• heist bases like Boom Mace
• kalguuran runesmithing enchants like Trigger Level 5 Lightning Bolt when you deal a Critical Strike

How does Path of Building behave?

Path of Building does not consider the case that equipping another item for the same slot may not grant the selected skill.

How to reproduce the issue

1. create a fresh build
2. equip Abberath's Hooves
3. sort unique boots by average hit
4. observe that the top one (currently) is Mutewind Whispersteps with +62.9% average hit, which is obviously nonsense

Character build code

No response

Screenshots

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Start by reproducing the issue with Abberath's Hooves, the Abberath's Fury skill, and unique boots sorted by average hit. Trace the stat comparison path for granted skills, including Boom Mace and the listed runesmithing enchant. Done means items that do not grant the selected skill show -100% damage while valid granting items are ranked correctly.