Also remove unit test

Touches some 'obvious' cases where histograms were misused.

- Replace copies by references to x, y and e histogram data
- Use setSharedX, setSharedY, setSharedE instead of manually copying the
values
- std::move vector data to histograms
- Fix off-by-one errors in SaveReflThreeColumnAsciiTest,
SaveReflCustomAsciiTest, SaveANSTOAsciiTest and ISISEnergyTransfer
- Fix issues in RefAxisTest

Re #24462

Refs #23399

... rather than the "hack" which just used the first log value. The way
this is done will also add support for other log types rather than just
things that are already doubles.