profiling/rules: Clear profiling flag at end

Issue: 6861

When profiling ends, clear the per-packet profiling flag to prevent
future profiling processing on the packet *unless it was enabled* again
for that packet.

With lightweight rule profiling, it's possible to perform profiling
end-time processing if profiling was active in the past but since has
been disabled.

src/util-profiling.h

@@ -423,6 +423,7 @@ void SCProfilingRuleThreatAggregate(DetectEngineThreadCtx *det_ctx);
                 ctx, r->profiling_id, profile_rule_end_ - profile_rule_start_, m);                 \
         profiling_rules_entered--;                                                                 \
         BUG_ON(profiling_rules_entered < 0);                                                       \
+        (p)->flags &= ~PKT_PROFILE;                                                                \
     }
 
 #else /* PROFILE_RULES */