fix: make `__callSiteEvals` private #2850

Job	Run time
compute-jobs	16s
build-linux / linux test-ops	5m 41s
build-linux / linux lint	52s
build-linux / linux coverage	3m 7s
build-linux / linux lint-deps	1m 41s
build-linux / linux test-publish	1m 23s
build-linux / linux test	3m 24s
build-linux / linux test-miri	5m 54s
build-linux-arm / linux-arm test	5m 6s
build-linux-arm / linux-arm test-miri	9m 37s
build-linux-arm / linux-arm lint	1m 21s
build-linux-xl / linux-xl test-valgrind	22m 25s
build-macos / macos lint	1m 5s
build-macos / macos test	3m 19s
build-windows / windows lint	4m 31s
build-windows / windows test	7m 39s
success	1s
	1h 17m 22s

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