New commits to remote jenkinsfile repository triggers builds

**Describe the bug**
Jenkins polls remote jenkinsfile repository even though it should not. I have followed the documentation and added Additional behaviors "Exclude from Poll" but commits pushed to the remote jenkinsfile repository triggers build anyway. I can see in the Scan Multibranch Pipeline Log that Jenkins polls remote jenkinsfile repository.

**Expected behavior**
The remote jenkinsfile repository should be ignored and not trigger builds on new commits.

**Screenshots**

**Additional context**
Using Remote Jenkinsfile Provider version 1.21

Reproduce the issue with Remote Jenkinsfile Provider 1.21 using a multibranch pipeline and the documented Additional behaviors setting "Exclude from Poll." Start with the Scan Multibranch Pipeline Log to determine why commits in the remote Jenkinsfile repository trigger builds; done means those commits are ignored while relevant repository changes still trigger builds.

Written by the indexing model from the issue text.