Stop passing in unnecessary parameters when parsing the Alternate e…

…ntry of `ICCBased` ColorSpaces (PR 9659 follow-up)

With the changes made in PR 9659, `ColorSpace.fromIR` no longer takes a second ``pdfFunctionFactory` parameter and there's thus one call-site that can be simplified.

src/core/colorspace.js

@@ -491,7 +491,7 @@ class ColorSpace {
             );
             // Parse the /Alternate CS to ensure that the number of components
             // are correct, and also (indirectly) that it is not a PatternCS.
-            const altCS = this.fromIR(altIR, pdfFunctionFactory);
+            const altCS = this.fromIR(altIR);
             if (altCS.numComps === numComps) {
               return altIR;
             }