MM: MM1: Bugged monster names in encounter messages

[sante-Paulus]

This bug affects encounter messages in mixed monster fights (which happen mostly in overworld). Whichever monster starts first, its name keeps being applied to messages during another monster turns.
Example: Player meets Sprites and Kobolds. Sprites are faster and attack first. Message looks something like "Sprites attacks and does X dmg/ misses/ whatever" and Sprite's name is applied for messages during Kobolds turns.
Not gamebreaking, but can make following enemies moves harder.

ScummVM 2.9.1 (Windows 10, 64 bit)
Game language English, version DOS

[dreammaster]

In 11766609:

MM: MM1: Fix bugged monster names in combat

This fixes #16460. It also contains some left over work from
the previous treasure items bugfix for the non-enhanced mode
that I forgot to include.