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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Inizia riproducendo il problema con Abberath's Hooves, la skill Abberath's Fury e gli stivali unici ordinati per colpo medio. Traccia il percorso di confronto delle statistiche per le skill concesse, inclusi Boom Mace e il runesmithing enchant indicato. Il lavoro è completato quando gli oggetti che non concedono la skill selezionata mostrano -100% di danni, mentre gli oggetti validi che la concedono vengono classificati correttamente.