MWRunFiles - Emit findingFiles() when searchText is not empty

SANS V2 Simplified PrintParser

Fix stitched transmission workspace names

Remove vtk directory from Paraview python path to resolve wx conflict with GSASIIRefineFitPeaks

- This commit adds a separator to the preprocessing algorithm class rather than hard-coding it. This means that a different separator can be used for output workspaces preprocessed with different algorithms.
- Stitched transmission workspaces names have been changed to use "_" rather than "+" as their separator to be consistent with previous behaviour and other stitching.

Re #22073

Include python qtawesome as a dependency

Refs #22074

Bad graph title sans diagnostics when no range

Figures made to 50% width
Algorithms placed after interfaces