Enhance `clamp()` adaptive behavior for different Writing Modes in using logical properties with viewport units

[czerkies]

• [x] vw → vi or svi
• [x] vh → vb or svb
• clamp() function used to adaptative spacing.

137

[czerkies]

Following the needed of viewport consistency behavior and a layout more corresponding to the ICB sizes, the viewport-units chosen is sbv and svi.

[czerkies]

@Vishal-Parasram You can take this Issue.

[Vishal-Parasram]

Thanks for assigning me.