Linearized fits rescale to the full data set whenever a fit is performed

[butlerpd]

Describe the bug
When performing linearized fits on a data set, hitting fit will reset the graph range to the full range of the data. Worse it seems to be applying the range from the scale of the original data? Either way, since most Linearized plots apply to a small region it becomes very difficult to deal with, particularly since the fit panel is modal (see #3019), requiring the user to close the fit, losing all their work, resetting the zoom factor on the graph then starting the fit panel again. The instructor's comment to me was "At this point users just go use another software when they need to do a linear fit."

Expected behavior
Fitting should have no affect on the graph ranges.

SasView version (please complete the following information):

• Version: 6.0.0b2

Operating system (please complete the following information):

• OS: Windows 10

Additional context
Reported during the NIST CNR summer school

[krzywon]

This is present in v5.0.6. Including this in 6.0.0 would likely be scope creep.

[krzywon]

This is only happening when the fit is already present on the plot and then replotting. If you zoom in and change the scales, the first fit will keep all plot properties. Subsequent fits will zoom to the default zoom range.