Include shaded regions for log values outside TimeROI

[searscr]

Description of work

Add a shaded region to sample logs plots that show regions of the logs being excluded by the TimeROI. The option is enabled by default in the Sample Log view and can be enabled in python scripts by including ShowTimeROI=True in the argument list.

To test:

from mantid.simpleapi import *
import matplotlib.pyplot as plt
import numpy as np

w=Load('CNCS_7860')
wsfiltered=FilterByTime(w, StartTime=80, StopTime=130)
fig = plt.figure()
ax1 = fig.add_subplot(211,projection='mantid')
ax2 = fig.add_subplot(212,projection='mantid')
ax1.plot(wsfiltered, LogName='ChopperStatus5',ShowTimeROI=True)
ax1.set_title('From run start')
ax2.plot(wsfiltered, LogName='ChopperStatus5',FullTime=True,ShowTimeROI=True)
ax2.set_title('Absolute time')
fig.tight_layout()
fig.show()

Running this script will display a plot with shaded regions where TimeROI is excluding values.

Viewing the logs before filtering will have the extra control disabled.

This PR is part of #34794.

---

Reviewer

Please comment on the points listed below (full description).
Your comments will be used as part of the gatekeeper process, so please comment clearly on what you have checked during your review. If changes are made to the PR during the review process then your final comment will be the most important for gatekeepers. In this comment you should make it clear why any earlier review is still valid, or confirm that all requested changes have been addressed.

Code Review

• Is the code of an acceptable quality?
• Does the code conform to the coding standards?
• Are the unit tests small and test the class in isolation?
• If there is GUI work does it follow the GUI standards?
• If there are changes in the release notes then do they describe the changes appropriately?
• Are the release notes saved in a separate file, using Issue or PR number for file name and in the correct location?

Functional Tests

• Do changes function as described? Add comments below that describe the tests performed?
• Do the changes handle unexpected situations, e.g. bad input?
• Has the relevant (user and developer) documentation been added/updated?

Does everything look good? Mark the review as Approve. A member of @mantidproject/gatekeepers will take care of it.

Gatekeeper

If you need to request changes to a PR then please add a comment and set the review status to "Request changes". This will stop the PR from showing up in the list for other gatekeepers.

[peterfpeterson]

Running (data is in the system tests area

Load(Filename="HYS_13656-13658", OutputWorkspace="sum")

then bringing up the log viewer does not disable the "Time ROI" button when sum.run().getTimeROI().useAll() is True

Running

Load(Filename="HYS_13656-13658", OutputWorkspace="sum")
FilterByLogValue(
    InputWorkspace="sum", OutputWorkspace="sum", LogName="s1", MinimumValue="0", MaximumValue="24.5", LogBoundary="Left"
)

works exactly as expected

[AndreiSavici]

Works as expected

Pete solved the issues