Reflexive “when” trigger not triggering multiple times when affected by replacement effects (Ajani, Nacatl Pariah)

Problem: Ajani, Nacatl Pariah has a "when" clause that should trigger for all Cat warrior tokens being created, but only triggers once regardless of how many tokens are created due to replacement effects. This fails with all token doublers.

I have tested that the error occurs with the following:
- Anointed Procession
- Elspeth, Storm Slayer
- Mondrak, Glory Dominus
- Ojer Taq, Deepest Foundation

Rule Discussion: https://mtgrocks.com/discovered-rules-interaction-makes-multi-format-mtg-staple-even-stronger/

Start by reproducing the issue with Ajani, Nacatl Pariah and each listed token doubler: Anointed Procession, Elspeth, Storm Slayer, Mondrak, Glory Dominus, and Ojer Taq, Deepest Foundation. Trace the reflexive “when” trigger through token creation and replacement effects. Done means the trigger resolves once for each resulting Cat Warrior token.

Written by the indexing model from the issue text.