Undo PR #8

[cameron1729]

We had to create #8 due to MDL-78276

We can probably safely keep the weak equality check, but we might want to consider changing it back to strict equality check after MDL-78276 is integrated.

Note that MDL-78276 will only be fixed in master, 4.2, and 4.1 - but the regression is also present in 4.0. So we may want to have a separate 4.0 branch for this plugin, or simply drop support for 4.0