[css-values-4] Ignore non-zero lengths when falling back to auto on table sizing w3c#4389 w3c#3482 w3c#94

Author: fantasai

css-values-4/Overview.bs

@@ -4551,7 +4551,7 @@ Computed Value</h3>
 	</div>
 
 	Given the complexities of width and height calculations on table cells and table elements,
-	math expressions mixing both percentages and lengths for widths and heights on
+	math expressions mixing both percentages and non-zero lengths for widths and heights on
 	table columns, table column groups, table rows, table row groups, and table cells
 	in both auto and fixed layout tables
 	MUST be treated as if ''width/auto'' had been specified.