XFA - Use fallback font when the fontfile is missing

[calixteman]

• it aims to fix some rendering issues in the pdf in XFA Binding error in Form #13756;
• add scale factors for Times New Roman.

[marco-c]

These are the most common fonts used in our corpus that are not embedded:

Helvetica, 971
EuropeanPi 3, 775
Calibri, 704
Helvetica-Narrow, 528
Myriad Pro, 520
EuropeanPi 2, 338
EuropeanPi 4, 334
Segoe UI, 192
Myriad Pro Black, 101
Times LT Std, 77
Webdings, 58
ArialMT, 57
OCR A Std, 51
Courier New, 48
ITC Zapf Dingbats Std, 45
Helvetica LT Std, 43
Helvetica-Bold, 38
HelveticaNeueLT Std Cn, 36
Arial, 33
Times New Roman, 29
Garamond, 28
Adobe Pi Std, 26
MyriadPro-Regular, 23
HP Simplified W01 Regular, 23
Frutiger LT Pro 45 Light, 20
Adobe Caslon Pro Bold, 18
Palatino, 17
Univ NewswCommPi, 17
MICR, 16
SymbolPS, 14
Tekton Pro, 14
Adobe Caslon Pro, 12
HelveticaNeueLT Std Blk Cn, 12
Palatino LT Std, 10
OCRA Alternate, 8
OCR A Extended, 8
arial, 7
Ravie, 7
Pierre Dingbats, 7
Calibri Light, 7
Cambria, 7
WingDings 3, 7
CourierPS, 7
Arial Rounded MT Bold, 6
Cambria Math, 6
Engravers MT, 6
Z@R685F.tmp, 6
Century, 6
HelveticaNeueLT Std Blk, 6
Kozuka Mincho Pro-VI R, 5
, 5
Garamond Premr Pro, 4
MS Reference Specialty, 4
HelveticaNeueLT Std, 4
EuropeanPi-Three, 4
Helvetica 35 Thin, 4
Helvetica 45 Light, 4
High Tower Text, 4
Adobe Garamond Pro, 4
HelveticaNeue Condensed, 4
Neutraface 2 Condensed Thin, 4
Corbel, 4
MyriadPro-Bold, 4
Catriel, 4
Candara, 4
Carbon Block, 4
CIC Mrv Mono, 4
Constantia, 4
Consolas, 4
Mangal, 4
Tahoma-Bold, 4
Tempus Sans ITC, 4
Teletype, 4
Cornerstone, 4
Cotillion, 4
Tabitha, 4
TimesNewRoman, 4
HelveticaNeue LightCond, 4
CG Omega, 4
Gill Sans MT, 4
Algerian, 3
Rockwell Extra Bold, 3
Magneto, 3
Lucida Console, 3
Helvetica 25 UltraLight, 3
Harrington, 3
Courier, 3
Franklin Gothic Demi, 3
ITC Zapf Dingbats, 3
Perpetua, 3
Yuvraj, 3
Arial Unicode MS, 2
Microsoft Yi Baiti, 2
Arial-BoldMT, 2
LucidaSans-Demi, 2
LucidaSans, 2
ComicSansMS, 2
OCRAbyBT-Regular, 2
AvenirNext LT Pro Regular, 2
Lloyds Bank Jack, 2
AvenirNext LT Pro Medium, 2
Lloyds Bank Jack Medium, 2
IRModena-Regular, 2
Adobe Heiti Std R, 2
Castellar, 2
Microsoft Himalaya, 2
WP-IconicSymbolsA, 2
HAW Frutiger Next Regular, 2
Aparajita, 2
HelveticaNeueLT Std Med, 2
Calisto MT, 2
AGaramond Bold, 2
Eras Bold ITC, 2
HelveticaNeue ThinCond, 2
Ebrima, 2
Adobe Hebrew, 2
Adobe Arabic, 2
Adobe Thai, 2
Adobe Gothic Std B, 2
OCR-B, 2
OfficinaSansITCPro Book, 2
Mongolian Baiti, 2
Wingdings-Regular, 2
Helvetica 55 Roman, 2
HelveticaNeueLT Std Bold Outln, 2
Wide Latin, 2
Book Antiqua, 2
Segoe Print, 2
WPTypographicSymbols, 2
WP TypographicSymbols, 2
Times New roman, 2
Rotis Semi Sans Std Light, 2
HelveticaNeueLT Std Lt Cn, 2
BNPP Sans, 2
BNPP Sans Extra Bold, 2
HelveticaNeueLT Std Med Cn, 2
BNPP Sans Light, 2
Lloyds Bank Jack Light, 1
Lloyds TSB VAG Rounded Light, 1
Franklin Gothic Medium, 1
Abadi MT Condensed Extra Bold, 1
Vrinda, 1
LloydsBankJack-Light, 1
BoS Pill Gothic, 1
Myriad Pro Cond, 1
ITC Franklin Gothic Std Book, 1
Script MT Bold, 1
Shruti, 1
Tw Cen MT Condensed, 1
Snap ITC, 1
Rockwell Condensed, 1
Rockwell, 1
TimesNewRomanPSMT, 1
Broadway, 1
Vivaldi, 1
Showcard Gothic, 1
Tw Cen MT Condensed Extra Bold, 1
Tw Cen MT, 1
Stencil, 1
Bookshelf Symbol 3, 1
Arial-Black, 1
LTB, 1
TheSans-Plain, 1
Trajan Pro, 1
Myriad Pro Regular, 1
Harlow Solid Italic, 1
Haettenschweiler, 1
Antique Olive Roman, 1
UniversLT-Condensed, 1
3 of 9 Barcode, 1
Arial Narrow, 1
Universal Std News w Comm Pi, 1
Frutiger LT Std 55 Roman, 1
Trebuchet MS, 1
MetaNormalLF-Roman, 1
Myriad Condensed Web, 1
MT Extra, 1
Adobe Corporate ID Std Adobe, 1
Icon-Works, 1
BaskervilleURWUltBol, 1
BaskervilleURWExtBol, 1
Modern Pictograms, 1

Times New Roman is not so frequent and not so rare, but it seems there are more frequent fonts that we don't have. Should we add them too?