Vertical color legends with horizontal title clash with the Use Above Range Color

[mwestphal (Mathieu Westphal (Kitware))]

Using MathText improve the situation by a few pixels, but there is a bug to fix.

• Title should take into account the “Above” color for positioning
• Text entry should accept multiline and support \n as classic annotations do

the title above is: $Very\ long\ text\ but\ this\ is\ still\ a\ bug\ to\ fix$

Please open issues: https://gitlab.kitware.com/paraview/paraview/-/issues