Control event handlers mis-type Me and leak generated names

Control event handlers could be analysed as if Me referred to the owning window instead of the control that raised the event. This affected Boolean-returning handlers such as ListBox.PaintCellText, where code like Me.RowTag(row) should resolve against the ListBox. Related analyser diagnostics could also show generated handler names such as ListBox1_PaintCellText instead of the public ListBox1.PaintCellText event name.

Fixed so control event handlers consistently analyse Me as the event source control and Self as the owning subscriber/window, suppress fixed-signature parameter-count warnings for real control events, and format control event diagnostics with public event names.