Ignore color-operators in Type3 glyphs beginning with a d1 operator (issue 12705)

Please refer to the PDF specification at https://www.adobe.com/content/dam/acom/en/devnet/acrobat/pdfs/PDF32000_2008.pdf#G8.1977497 and https://www.adobe.com/content/dam/acom/en/devnet/acrobat/pdfs/PDF32000_2008.pdf#G7.3998470

This patch removes the color-operators in the evaluator, since that should be more efficient than doing it repeatedly in the main-thread when rendering the Type3 glyphs.

test/pdfs/.gitignore

@@ -222,6 +222,7 @@
 !issue5734.pdf
 !issue4875.pdf
 !issue11740_reduced.pdf
+!issue12705.pdf
 !issue4881.pdf
 !issue5994.pdf
 !issue6151.pdf

test/test_manifest.json

@@ -4531,6 +4531,12 @@
        "annotations": true,
        "type": "eq"
     },
+    {  "id": "issue12705",
+       "file": "pdfs/issue12705.pdf",
+       "md5": "d8725b9dcfef72fd4fa4a39cab711624",
+       "rounds": 1,
+       "type": "eq"
+    },
     {  "id": "annotation-strikeout",
        "file": "pdfs/annotation-strikeout.pdf",
        "md5": "6624e6b5bedd2f2855b6ab12bbf93c57",
@@ -4894,5 +4900,5 @@
       "rounds": 1,
       "type": "eq",
       "annotations": true
-   }
+    }
 ]