Port bug 1515649 - [taskgraph] Remove only-if-dependencies-run optimization, take 2. rs=bustage-fix r=rjl

--HG--
extra : amend_source : a9a529456d64fa7fec8a45b17ec9706dfc926849

taskcluster/ci/upload-symbols/kind.yml

@@ -35,4 +35,3 @@ job-template:
         sparse-profile: upload-symbols
     scopes:
         - secrets:get:project/comm/thunderbird/releng/build/level-{level}/gecko-symbol-upload
-    run-on-projects: ['all']