Fix `ShellOps` not being kept active by tools that use it #2147

Job	Run time
Build apps (Foss, Debug, app)	5m 44s
Lint vitals (Foss, Beta, app)	5m 57s
Build apps (Gplay, Debug, app)	5m 43s
Lint vitals (Foss, Release, app)	5m 55s
Lint vitals (Gplay, Beta, app)	6m 36s
Unit tests (Debug, test)	3m 13s
Unit tests (Debug, testFoss)	5m 38s
Lint vitals (Gplay, Release, app)	5m 56s
Unit tests (Debug, testGplay)	5m 53s
Unit tests (Beta, test)	3m 23s
Unit tests (Beta, testFoss)	5m 25s
Unit tests (Beta, testGplay)	5m 51s
Unit tests (Release, test)	3m 27s
Unit tests (Release, testFoss)	5m 39s
Unit tests (Release, testGplay)	6m 6s
	1h 20m 26s

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