Make TexTools aware of Live Unwrap

[franMarz]

Live Unwrap being active has been causing overall malfunctioning of TexTools.

Some operator refactoring may change that (by avoiding script-like behaviour like edit to object mode switching which triggers undesired dependency graph updates in the middle of the script execution). But that is challenging and maybe not the solution so, by now, we better alert about Live Unwrap being enabled, adding it to the operators pools, like we used to do with the UV Selection Sync status.