[css-values-5] Don't make *-interpolate()'s result consistent with its progress; there's no % context to carry in here. w3c#6245

Author: tabatkins

css-values-5/Overview.bs

@@ -1045,6 +1045,7 @@ Global Syntax of the *-interpolate() family</h3>
 	These represent the [=interpolation progress=] and [=interpolation map=]
 	as described below.
 
+
 <h4 id="interpolation-progress-arguments">
 Specifying the Interpolation Progress</h4>
 
@@ -1292,8 +1293,11 @@ Interpolated Numeric and Dimensional Values: the ''calc-interpolate()'' notation
 	to any <<number>>, <<dimension>>, or <<percentage>>,
 	but must have a [=consistent type=]
 	or else the function is invalid.
-	The result's type will be the [=consistent type=],
-	[=made consistent=] with the type of the <<progress-source>> value.
+	The result's type will be that [=consistent type=].
+
+	The <<progress-source>> and <<input-position>> values
+	do not use the inherited [=calculation context=];
+	they resolve percentages as specified in [[#interpolation-normalization]].
 
 <h3 id="color-interpolate">
 Interpolated Color Values: the ''color-interpolate()'' notation</h3>