Add Dangerfile improvements from PR feedback

Dangerfile

@@ -11,7 +11,7 @@ android_release_checker.check_release_notes_and_play_store_strings
 
 android_strings_checker.check_strings_do_not_refer_resource
 
-# skip remaining checks if we're during the release process
+# skip remaining checks if we're in a release-process PR
 if github.pr_labels.include?('Releases')
  message('This PR has the `Releases` label: some checks will be skipped.')
  return
@@ -30,14 +30,17 @@ pr_size_checker.check_diff_size(
 
 android_unit_test_checker.check_missing_tests
 
-# skip remaining checks if we have a Draft PR
-return if github.pr_draft?
+# skip remaining checks if the PR is still a Draft
+if github.pr_draft?
+ message('This PR is still a Draft: some checks will be skipped.')
+ return
+end
 
 labels_checker.check(
  do_not_merge_labels: ['Do Not Merge'],
  required_labels: [//],
  required_labels_error: 'PR requires at least one label.'
 )
 
-# skip check for draft PRs and for WIP features unless the PR is against the main branch or release branch
-milestone_checker.check_milestone_due_date(days_before_due: 4) unless github_utils.wip_feature? && !(github_utils.release_branch? || github_utils.main_branch?)
+# runs the milestone check if this is not a WIP feature and the PR is against the main branch or the release branch
+milestone_checker.check_milestone_due_date(days_before_due: 4) if (github_utils.main_branch? || github_utils.release_branch?) && !github_utils.wip_feature?