Fix font width array parsing when entries are indirect object references (#1307)

* Improve error handling in FontDictionaryAccessHelper

Refactor error handling for non-numeric tokens in width array.

* Improve error message in InvalidFontFormatException

Author: VarunSaiTeja

src/UglyToad.PdfPig/PdfFonts/Parser/FontDictionaryAccessHelper.cs

@@ -48,7 +48,14 @@ public static double[] GetWidths(IPdfTokenScanner pdfScanner, DictionaryToken di
 
                 if (!(arrayToken is NumericToken number))
                 {
-                    throw new InvalidFontFormatException($"Token which was not a number found in the widths array: {arrayToken}.");
+                    if (DirectObjectFinder.TryGet<NumericToken>(arrayToken, pdfScanner, out var resolved))
+                    {
+                        number = resolved;
+                    }
+                    else
+                    {
+                        throw new InvalidFontFormatException($"Token which was not a number found in the widths array: {arrayToken}.");
+                    }
                 }
 
                 result[i] = number.Double;