Monsters casting a spell will always print a message, even if the message is empty

[SariusSkelrets]

Describe the bug

As I was working on the cryptid PR, I noticed that a spell with a blank message would still print a message in the log, which breaks immersion as these spells aren't intended to print messages so they stick out like a sore thumb.

Attach save file

N/A The bug can be replicated without needing precise circumstances.

Steps to reproduce

1. Load the game with a monster able to cast spells with >message: ""< such as XE's shifter
2. Spawn said monster
3. "The shifter casts duplicator shifting at the shifter!" x100

Expected behavior

All spell messages being able to be suppressed, so it preserves the player's immersion without needing stuff such as the shadow's zero-second blind

Screenshots

Versions and configuration

• OS: Windows
  • OS Version: 10.0.22631.4317 (23H2)
• Game Version: cdda-experimental-2024-10-21-0327 5762e89 [64-bit]
• Graphics Version: Tiles
• Game Language: English [en]
• Mods loaded: [ Dark Days Ahead [dda], Disable NPC Needs [no_npc_food], Portal Storms Ignore NPCs [personal_portal_storms], Slowdown Fungal Growth [no_fungal_growth], Xedra Evolved [xedra_evolved] ]

Additional context

I'm also including the issue that polymorph will always do a message because both are part of the same issue of spell messages not being possible to hide when spells are casted by monsters.

[Standing-Storm]

/confirmed, observed in both of the issues I referenced above.

In addition, sometimes it will even falsely claim that the avatar is the one casting the spell: