Pause button for a ship upgrade doesn't change state on shipyard

Issue description

The picture of the pause button does not change when pausing an upgrade of the on the shipyard.
The pause is indeed working but the UI does not refelct it

Reproduction steps

Launch an upgrade of the ship, pause the upgrade on the shipyard

Game version and build number

v0.7.1c b417

Operating system

Windows

This was fixed in one of our previous updates. Thanks for reporting it!