Classify whether a CoT type string denotes an aircraft.
The rule (per the wire spec): the 3rd hyphen-separated atom of the type
string is the Air battle-dimension indicator "A" (e.g. a-f-A-M-H,
a-n-A-C-F). Works on unknown/unmapped type strings, which is why the parser
path uses it directly when the enum is COTTYPE_OTHER.
Classify whether a CoT type string denotes an aircraft.
The rule (per the wire spec): the 3rd hyphen-separated atom of the type string is the Air battle-dimension indicator
"A"(e.g.a-f-A-M-H,a-n-A-C-F). Works on unknown/unmapped type strings, which is why the parser path uses it directly when the enum is COTTYPE_OTHER.