[CORE/SPELL/TALENTS] Switching talents while on cooldown

[lingxDEV]

Current behaviour:

You can switch from a talent that is on cooldown and pick another talent from the same row.

Expected behaviour:

While a talent is on cooldown, you should not be able to unlearn it.

Steps to reproduce the problem:

1. Make any class
2. Pick a talent with a cooldown > use the spell > unlearn the talent > see that you can unlearn the talent even though it's on cooldown

SF rev. hash/commit:

Skyfire rev. 0e61f8a

SFDB version:

stable5

Operating system:

win10 64