Fix cancellation crash in adaptive (#1184) #1923

Job	Run time
Build on windows-latest for repo global.json	18m 55s
Build on windows-latest for 6.0 stable	16m 23s
Build on windows-latest for 7.0 preview	20m 10s
Build on macos-latest for repo global.json	13m 43s
Build on macos-latest for 6.0 stable	23m 29s
Build on macos-latest for 7.0 preview	20m 8s
Build on ubuntu-latest for repo global.json	14m 6s
Build on ubuntu-latest for 6.0 stable	13m 41s
Build on ubuntu-latest for 7.0 preview	15m 55s
	2h 36m 30s

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