[infra] Rename `dart.yaml` to `native.yaml` #1

Job	Run time
build (ubuntu, stable, native_assets_builder, true)	5m 11s
build (ubuntu, stable, native_assets_cli, true)	2m 13s
build (ubuntu, stable, native_toolchain_c, true)	2m 59s
build (ubuntu, dev, native_assets_builder, true)	36s
build (ubuntu, dev, native_assets_cli, true)	30s
build (ubuntu, dev, native_toolchain_c, true)	23s
build (macos, stable, native_assets_builder, true)	6m 50s
build (macos, stable, native_assets_cli, true)	2m 43s
build (macos, stable, native_toolchain_c, true)	3m 30s
build (windows, stable, native_assets_builder, true)	7m 48s
build (windows, stable, native_assets_cli, true)	2m 16s
build (windows, stable, native_toolchain_c, true)	6m 55s
coverage-finished	4s
	41m 58s

Provide feedback