test: execute 'protractor' binary directly in 'browsers' E2E test #2996

Job	Run time
list	26s
workflow (devkit-core-tests-rerun)	1m 26s
workflow (build-cli)	1m 42s
workflow (devkit-core-tests)	1m 26s
workflow (build-unit-tests)	2m 36s
workflow (modules-builder-tests)	1m 56s
	9m 32s

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