[PATCH] controls: Remove redundant states from InlineMessage

[PATCH] controls: Remove redundant states from InlineMessage

States describe changes from a base state. The base state can just be
declared normally, there is no need to declare it as a separate state.
This fixes centering the close button in single-line inline messages,
because the "centered" state was never activated.

Gbp-Pq: Name upstream_bae0957d_controls-Remove-redundant-states-from-InlineMessage.patch