Merge branch '3382942-round-3' into '3.0.x'

package_manager/package_manager.services.yml

package_manager/src/Event/CollectPathsToExcludeEvent.php

package_manager/src/Event/PreApplyEvent.php

package_manager/src/Event/PreCreateEvent.php

package_manager/src/Event/StatusCheckEvent.php

package_manager/src/ExecutableFinder.php

package_manager/src/FileSyncerFactory.php

package_manager/src/ImmutablePathList.php

package_manager/src/PackageManagerServiceProvider.php

package_manager/src/ProcessFactory.php

package_manager/src/StageBase.php

package_manager/src/StatusCheckTrait.php

package_manager/src/TranslatableStringFactory.php

package_manager/src/Validator/SymlinkValidator.php

...ules/fixture_manipulator/fixture_manipulator.services.yml

...ackage_manager_bypass/package_manager_bypass.services.yml

...ts/modules/package_manager_bypass/src/LoggingBeginner.php

...s/modules/package_manager_bypass/src/LoggingCommitter.php

...anager_bypass/src/PackageManagerBypassServiceProvider.php

package_manager/tests/src/Kernel/ExecutableFinderTest.php