Disable loc builds from release branch for 6.0 (#5653) (#5655) (#5664)

Author: dreddy-work

azure-pipelines.yml

@@ -100,7 +100,7 @@ stages:
       skipTests: $(SkipTests)
 
 
-- ${{ if and(ne(variables['System.TeamProject'], 'public'), notin(variables['Build.Reason'], 'PullRequest')) }}:
+- ${{ if and( and( ne(variables['System.TeamProject'], 'public'), notin(variables['Build.Reason'], 'PullRequest')), eq(variables['Build.SourceBranch'], 'refs/heads/main')) }}:
   - stage: OneLocBuild
     displayName: Publish localizable content to OneLocBuild
     jobs: