Web IDE: Remove unusedSeal and related actions
What does this MR do?
The property unusedSeal, and related actions and mutations were
redundant. We can easily identify if there are no changes by checking
someUncommitedChanges property on state.
This cleanup would help simplify #196630 (closed) because the Web IDE has quite some inconsistent states due to the presence of this property.
The property has been present since the inception of the Web IDE, and was essentially meant to tell whether there are any changes present or not, in order to show an empty state.
References
Edited by Himanshu Kapoor