Spacing Controls bad layout for RTL language users

[diggeddy]

Description

RTL direction messes with the layout of the spacing controls:

Original support topic: https://generate.support/topic/gb-new-ui-on-rtl-sites/#post-30170

Have tested and cofirmed. Notice also the missing spacing between panel button text and labels.

This can be resolved by using margin-inline-end instead of margin-right

Ie. change this:

.gblocks-panel-label svg.components-panel__icon {
    margin: 0 10px 0 0;
}

to:

.gblocks-panel-label svg.components-panel__icon {
    margin-inline-end: 10px;
}