[FIX] web: show tooltips on status bar widgets
[FIX] web: show tooltips on status bar widgets

The 'new views' refactoring introduced the usage of the "disabled"
attribute in addition to the associated bootstrap class. As a
side-effect, tooltips are never rendered when the mouse is on a disabled
button, since disabled elements do not fire mouse events.

In particular, no tooltip is shown when hovering over a disabled button
of the statusbar in debug mode. This can be observed when opening the
form view of a Manufacturing Order.

We fix this issue by requiring that disabled buttons in a status bar
never be the target of mouse events, triggering them on their
respective parent elements instead.

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