Refs #27883

Re #28236

Re #28236

This commit adds a reason for the context menu being disabled in this release.

re: #28104

This commit add a record of the context menu being disabled in the indirect data analysis gui.

re: #28104

Remove spurious FileFinder call

In workbench warnings shown as errors mean't that any deprecation
warnings would show as errors when in fact a script should still complete
successfully. This captures them at the correct level.

This Commit fixes a bug in in the mantid plotting in workbench where if a MDHistoWorkspace, or any workbench without an `isDistribution()` method, was plotted users would not be able to open the context menu as it would encounter an error when tying to work out if it is possible to normalize the plot.

re: #28082

Change the SANS Beam Centre Finder to prints the average residual change
between two quarters. This allows for direct comparisons, previously if
a user increased the radius limit it would appear to perform worse,
despite actually doing better. This was because the additional number of
points was not accounted for.

This implementation is based on the implementation in MantidPlot.
A C++-based executor has been added that can execute Python code
with the option of installing a trace function to update
a progress marker on a given editor window.

The old implementation attempted to chunk up the script into
the smallest executable blocks and mark each of these as when
they were executed. There were 2 issues:
  - the chunking of the scripts was error prone as it actually
    requires a good knowledge of how Python internally handles
    indentation etc. It was fairly easy to break and future
    internal updates to Python would have required unknown changes.
  - the progress reporting resolution was far poorer than MantidPlot
    as the actual line being executed was not reported but inferred
    by what block was being executed giving a false sense of progress
    through a script.

Re #27633