For Type1 fonts, replace missing font dictionary /Widths entries with ones from the font data (issue 11150)

Hopefully this patch makes sense, and in order to reduce the regression risk the implementation ensures that only completely missing widths are being replaced.

test/pdfs/.gitignore

@@ -82,6 +82,7 @@
 !issue10665_reduced.pdf
 !issue11016_reduced.pdf
 !issue11045.pdf
+!issue11150_reduced.pdf
 !bad-PageLabels.pdf
 !decodeACSuccessive.pdf
 !filled-background.pdf

test/test_manifest.json

@@ -53,6 +53,13 @@
        "link": false,
        "type": "text"
     },
+    {  "id": "issue11150",
+       "file": "pdfs/issue11150_reduced.pdf",
+       "md5": "8b86381089a9ec28723791245a9adfa6",
+       "rounds": 1,
+       "link": false,
+       "type": "eq"
+    },
     {  "id": "issue1293",
        "file": "pdfs/issue1293r.pdf",
        "md5": "4a098f5051f34fab036f5bbe88f8deef",

test/unit/type1_parser_spec.js

@@ -90,7 +90,7 @@ describe('Type1Parser', function() {
       '/.notdef 1 RD x ND\n' +
       'end');
     var parser = new Type1Parser(stream, false, SEAC_ANALYSIS_ENABLED);
-    var program = parser.extractFontProgram();
+    var program = parser.extractFontProgram({});
     expect(program.charstrings.length).toEqual(1);
     expect(program.properties.privateData.ExpansionFactor).toEqual(99);
   });