test: make test runner scene ignored by default for BaseMultiInstanceTest#1154

NoelStephensUnity merged 8 commits intodevelopUnity-Technologies/com.unity.netcode.gameobjects:developfrom

test/default-multiInstance-testrunner-scene-validationUnity-Technologies/com.unity.netcode.gameobjects:test/default-multiInstance-testrunner-scene-validationCopy head branch name to clipboard