Fix unhandled exception in validateInputs in RSIQ

RROA polarization correction bug.

Fix PreviewPlot crash when removing workspace.

Add python psutil to developer packages

Re #22933

Re #22997

Refs #22946

Fix constraint removal in multi-dataset fit interface.

Update Project Recovery Concept Doc

Rounding sample thickness display value

Add documentation page for Multi-dataset Fitting

This commit adds a temporary fix for an unhandled exception in validateInputs. The exception occurs when opening AlgorithmDialog on a group workspace. This first calls validateInputs on the group for the dialog, before calling it on the individual workspaces when executing the algorithm. Workspace groups are not currently handled. Adding full validation for groups is beyond this PR so this fix just skips validation rather than throwing the exception.

Re #22933

re #1

IN16B QENS: relax too strict error

Reduces the execution time. Both folders contain adequate numbers of file types to test so testing both seems excessive.

Re #22958

Remove newline chars in the script builder when writing history

Allow loading of logs after duplicate detected

Remove "Send cluster" in reduction UI

Added the option to load NX 5 extension

Fix MAUD warning on Mantid start

Changed save extension to .h5 

Removed beam centre finder Q limits Updated user file parser 

Re #22963.

Added images to sans and refletometry release notes

Sans usability fixes

MWRunFiles : launch file finding also with empty string

Indirect Data reduction use the same syntax as GroupDetector algorithm