Issue #2856967 by yongt9412, Sam152: Allow admins to select a default starting moderation state

...nt_moderation/config/schema/content_moderation.schema.yml

core/modules/content_moderation/content_moderation.module

...les/content_moderation/content_moderation.post_update.php

...nt_moderation/src/Form/ContentModerationConfigureForm.php

..._moderation/src/Plugin/WorkflowType/ContentModeration.php

...ation/tests/src/Functional/DefaultModerationStateTest.php

...tests/src/Functional/DefaultModerationStateUpdateTest.php

...ion/tests/src/Kernel/ModerationStateFieldItemListTest.php

...emo_umami/config/install/workflows.workflow.editorial.yml

...standard/config/optional/workflows.workflow.editorial.yml