fix: prefer common media extensions

[pupuking723]

Fixes jshttp/mime-types#142.
Fixes jshttp/mime-types#139.

This updates the preferred extension ordering for two media types whose first extension is surfaced by downstream consumers such as mime-types.extension():

• audio/aac: prefer aac before adts
• video/quicktime: prefer mov before qt

The generated db.json has been rebuilt from the updated source data, and the existing default-extension test now covers both media types.

Verification:

• npm test
• npm run lint