[MIRROR] Enable mech logging by default (#2717)

* Enable mech logging by default (#82299)

## About The Pull Request

Enables mech logging by default- this wasn't enabled by default when it
was first introduced 6 years ago. These logfiles are tiny(In 1 terry
round: 2kb mecha, 350kb game.txt), there is no reason to not have this
enabled by default.

## Changelog
:cl:
config: mech logging is now on by default. Existing config setups will
not mirror this change.
/:cl:

* Enable mech logging by default

---------

Co-authored-by: NovaBot <[email protected]>
Co-authored-by: Cyprex <[email protected]>

config/logging.txt

@@ -39,7 +39,7 @@ LOG_GAME
 LOG_MANIFEST
 
 ## log mecha actions
-# LOG_MECHA
+LOG_MECHA
 
 ## log OOC channel
 LOG_OOC