not using visvalingam breaks earcut in maplibre. (#828) #1279

Job	Run time
docker-build	3m 0s
ubuntu-22.04 (CMake)	4s
ubuntu-22.04 (Makefile)	57s
Generate mbtiles with Github Action	20s
Windows (CMake)	4s
macos-latest (Makefile)	41s
macos-14 (Makefile)	44s
	5m 50s

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