refactor: internal ops are under Deno.core.coreOps #2074

Job	Run time
compute-jobs	15s
build-linux / linux test-ops	5m 41s
build-linux / linux lint-deps	50s
build-linux / linux test-publish	1m 24s
build-linux / linux lint	48s
build-linux / linux test	3m 13s
build-linux / linux test-miri	6m 50s
build-macos / macos lint	2m 5s
build-macos / macos test	7m 48s
build-windows / windows lint	2m 19s
build-windows / windows test	11m 24s
success	1s
	42m 38s

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