Air carrier Captain reported the RNAV Z 24L approach at CYUL airport creates false navigational warnings due to construction on the Runway 24L threshold and the relocation of the touchdown point.

Narrative

There's a notam for 24L of construction at the approach end of 24L. The RNAV Z 24L has been adjusted for the new landing point. Landing distance is reduced to 7;009 ft. We obtained a Landing Data message and it showed the 7;009 ft; with Brakes 2 or 3 giving plenty stopping distance. We were fully configured; Stable; and Landing checklist completed at 2;000 ft. At 1;000 ft; we got a Too High Too High aural alert from the Runway Awareness and Advisory System (RAAS). We double checked and we were perfectly aligned on the RNAV approach; on speed; and in the flight director. PAPI showed 3 white one red due to the new aim point because of construction at the end of the runway. We both confirmed / agreed that the RAAS alert was due to the new aim point and that the RNAV was guiding us correctly. At 600 ft the RAAS gave an aural warning Unstable Unstable. Due to all the emphasis to Go Around during low aural warnings; I elected to Go Around. The Go Around was uneventful and we told ATC that we required 24R; something we had heard several other aircraft state. We received vectors for an ILS / Visual to 24R and landing was uneventful.