Debugger: Fix updating of disabled/enabled state of breakpoints

If had been triggered on the Breakpoints view everything was fine,
but triggering on the editor this did not update the Breakpoints view.

Change-Id: I7f8e672bdf0f7f00cdb11183dc5e8e0eea817884
Reviewed-by: hjk <hjk@theqtcompany.com>

src/plugins/debugger/breakhandler.cpp

@@ -820,6 +820,7 @@ void Breakpoint::setEnabled(bool on) const
         return;
     b->m_params.enabled = on;
     b->updateMarkerIcon();
+    b->update();
     if (b->m_engine) {
         b->m_state = BreakpointChangeRequested;
         b->scheduleSynchronization();