RF: stop hiding boss/role/priority debuffs on party members

[dfrisone]

Cause: the Debuff Manager gated boss/role/priority debuff categories
behind an assist check that self-exempts the local player but requires
connected/alive/assistable/visible/not-phased for everyone else. Any
one of those blipping mid-fight (a phase flag, a range hiccup, a
connection stutter) zeroed the debuff on that unit's frame while it
stayed reliably visible on your own.
Fix: drop the gate on those categories, both the base-record path and
the Icon Effects tile path. Blizzard's aura engine does not
identity-gate boss/role/priority auras for any unit, so the check was
unnecessary.
Test: verified against the local Blizzard 12.1 source; luac + style
check clean. Confirmed in-game.

Reported by Mantis (IskrenTz) - Altar of Fangs, Zul'jan's Ritual of
the Fang, the soak debuff intermittently missing from party frames.