Fix EstimateTokenCost test (#4361) #16103

Job	Run time
Ubuntu Build asan	31m 56s
Ubuntu Build debug	9m 14s
Ubuntu Build coverage	2h 36m 34s
Ubuntu Build release:arm64	16m 1s
Ubuntu Build release	13m 57s
Ubuntu Build tsan	51m 37s
Ubuntu Build release-nojpeg	8m 10s
Ubuntu Build release-lcms2	8m 33s
Ubuntu Build msan	1h 6m 26s
Ubuntu Build scalar	11m 25s
Ubuntu Build lowprecision	13m 56s
Ubuntu Build release:minimal	8m 16s
Ubuntu Build release:arm64-lowprecision	15m 14s
Ubuntu Build release-system-lcms2	8m 41s
Ubuntu Build release:gcc-old	8m 53s
Ubuntu Build release:clang-old	8m 31s
Ubuntu Build release:clang-old-old	8m 36s
Ubuntu Build release:gcc-old-old	8m 58s
Ubuntu Build release:gcc	9m 18s
MacOS Build release:osx	10m 27s
MacOS Build release:osx-15	15m 48s
	8h 10m 31s

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