Allow arrow configuration with controller approach

Editor assessment

Enabling arrow configuration through the controller approach is arguably a small feature, so 'fix' is a judgment call; it is defensible if the API was documented as working but didn't, which the linked issue (#24487) presumably establishes. The subject is imperative ('allow arrow configuration...'), specific, and a comfortable length. The 'popover' scope is precise and matches the affected component. The 'Resolves #24487' footer is correctly separated by a blank line and formatted per convention, so automation and semantic-release-style tooling will treat this as a patch. A body sentence clarifying that the programmatic controller path now honors the arrow option would remove any residual ambiguity for readers.