`dir="rtl"` bug in layers control

[Malvoz]

Bug in the RTL map:

Caused by the following styles which seem redundant and safe to remove:

https://github.com/Maps4HTML/Web-Map-Custom-Element/blob/b1a79c9a26f5989066d5114efea8d0465d28eb92/src/mapml.css#L869-L872

[prushforth]

Thanks Robert! Nice to see you.

Caused by the following styles which seem redundant and safe to remove:

The menu without the offending rule:

Seems odd to me that sliders don't flip their min/max ends when in rtl mode!