MBStyles: enable by default "group" and "labelAllGroup"

Description

Lines are getting labelled more than necessary because of the eventual tile splitting in the source (e.g., MBTiles + PBF) , make it merge the lines and label the result once by default.

Environment

None

Assignee

Andrea Aime

Reporter

Andrea Aime

Triage

None

Components

Fix versions

Priority

Medium
Configure