PdfRenderer fails to render subsetted font

In 2.0.3, TrueTypeEmbedder initializes FONT_FILE2 with the full font (1) and then writes the subset later on save (2) (3).

In 2.0.15 TrueTypeEmbedder now only initializes FONT_FILE2 if !embeddedSubset (4).

This results in PDFRenderer failing to find and use the intended font when using a PDDocument that has never been saved.

Attached patch restores the original behavior to work around the issue.

(1) https://apache.googlesource.com/pdfbox/+/refs/tags/2.0.3/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/font/TrueTypeEmbedder.java#82

(2) https://apache.googlesource.com/pdfbox/+/refs/tags/2.0.3/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/PDDocument.java#1128

(3) https://apache.googlesource.com/pdfbox/+/refs/tags/2.0.3/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/font/TrueTypeEmbedder.java#100

(4) https://apache.googlesource.com/pdfbox/+/refs/tags/2.0.15/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/font/TrueTypeEmbedder.java#77