Revert "Don't depend on source-build job while it isn't running (#46220)"

This reverts commit 7369057.

Author: wtgodbe

.azure/pipelines/ci.yml

@@ -831,6 +831,7 @@ stages:
                 - MacOS_Test
                 - Linux_Test
                 - Helix_x64
+            - Source_Build_Managed
           pool:
             name: NetCore1ESPool-Internal
             demands: ImageOverride -equals 1es-windows-2019
@@ -869,6 +870,7 @@ stages:
                 - MacOS_Test
                 - Linux_Test
                 - Helix_x64
+            - Source_Build_Managed
           pool:
             name: NetCore1ESPool-Internal
             # Visual Studio Enterprise - no BuildTools agents exist internally and job must run on Windows