Fix spectre buffs global effects applying just by existing in the spectre library

[nofate121]

Fixes #9539, #8444 .

Description of the problem being solved:

Currently if one wants to get the benefits of normal Forest Warrior Culling Strike, it has to be an active gem slot and included in Full DPS. That is clear even from the information in the spectre libarary which says:

"Spectres in your Library must be assigned to an active Raise Spectre gem for their buffs and curses to activate".

But the Onslaught buff of the Perfect Forest Warrior gets applied just by being in the spectre library (and having a different spectre used in a spectre gem). Creators already add the gem setup multiple times anyway, because of the non-global skills not applying otherwise. With this pr, the same is true for global effects from spectres.

For example Ghazzy added the line in his spectre build low budget setup, because they are only used in medium budget version loadout, but are still applying the buff in the low budget loadout.

Forest Warrior PoB bug compensation
Minions have 20% reduced cast speed

Related to #9306.

Steps taken to verify a working solution:

• Tested PoB from issue https://pobb.in/gIkEH3oU8iRe
• Tested PoB from Ghazzy spectre https://pobb.in/Og2D91DozNe1
• Tested PoB from Helm Breaker https://maxroll.gg/poe/pob/8r1afp0g

Link to a build that showcases this PR:

https://pobb.in/gIkEH3oU8iRe

Before screenshot:

After screenshot:

[nofate121]

Fixed some spelling errors.