Previously such use cases have been returning `null` values just fine since `GetLocalisableString` was returning `LocalisableFormattableString`, and these null values were wrapped in `LocalisableString`s implicitly, therefore not requiring an explicit fallback string and `null` doesn't break anything.
Most other usages have this included. Noticed that the panel was
changing state when exiting the game using cmd-w.
Would probably be nice to have an exposed `HasAnyModifierPressed` helper
property.
Just copied what we had in place for the mouse sensitivity setting. For
tablet settings I believe I avoided this by just hiding the settings
when not enabled. Might be a better way forward, but this is simplest
for now.
Run `TestSceneSettingsPanel` twice to get a crash without this change.