OverRun, you have applied some selective reading there . . . .
On that same chart, there is another box at the top titled
CAUTION / RESTRICTION and the first point therein is:
1. ACFT to exercise caution when taxiing on
TWY B southbound to THR RWY 03L due to
Apron taxilane M extending from TWY B in a
Southerly direction.
That makes it clear that M is to be considered a non-taxiway, and hence unlit. And, as someone mentioned earlier, movement by tug only.
When quoting from the Aerodrome Design Manual, the full text is:
1.1.8 Taxilanes located on aprons are divided into 2 types . . . .
which makes it clear that not all taxilanes have to be on aprons. Indeed the document mostly uses the laborious "aircraft stand taxilanes" which implies there are other types of taxilanes, but there doesn't seem to be a definition . . . .