DFMTU is unstable on Firefox

[Arturro43]

DFMTU script requires a few restarts before hitting rate limit, because it stops working after some time. It happens only on Firefox (tested on 115.4.0esr).

I'll try to fix it in the future, probably by completely reworking autoUnlike function.

For now, my fellow Firefox users, keep your eyes on likes count and if it stops dropping - reload site, paste script again and repeat untill you get rate limited.

I don't want to sacrifice speed, because I spent hours testing many different ways and I chose the "oh-lord-please-help-me-its-soooo-awfully-fast-as-f*ck" one.