Fix scrollbar dragged state after release left mouse button

[LuisLiraC]

Description:
Ensure the correct handling of event_status after checking all possible events. Previously, it was returned before checking Mouse Events, resulting in the scrollbar being dragged continuously from the first click onwards.

Before:

• The scrollbar is still dragged even after releasing the left button.

After:

• The scrollbar is released when the left button is no longer clicked.

[hecrj]

This doesn't seem right. If the contents of the scrollable capture the event; the scrollable should not handle it.

This is most likely caused by some other widget capturing the mouse release when it shouldn't.

Do you have an SSCCE of the issue? Have you implemented a custom widget?

[hecrj]

The real issue here is that the TextEditor is incorrectly capturing mouse::Event::ButtonReleased.

However, I don't think an incorrect widget implementation should break the scrollable; so I changed it a bit to only prioritize the release events even if they are captured.

Thanks!