Removes all CSS custom properties that were set on the document root.
Note: This removes ALL custom properties, not just those set by applyHostStyleVariables.
Parameters
variables: Record<string,string>
Record of variable names to clear (same format as applyHostStyleVariables)
Clear all host-provided CSS variables
Removes all CSS custom properties that were set on the document root. Note: This removes ALL custom properties, not just those set by applyHostStyleVariables.