XFA - Fix text positions (bug 1718741)

- font line height is taken into account by acrobat when it isn't with masterpdfeditor: I extracted a font from a pdf, modified some ascent/descent properties thanks to ttx and the reinjected the font in the pdf: only Acrobat is taken it into account. So in this patch, line heights for some substituted fonts are added.
  - it seems that Acrobat is using a line height of 1.2 when the line height in the font is not enough (it's the only way I found to fix correctly bug 1718741).
   - don't use flex in wrapper container (which was causing an horizontal overflow in the above bug).
   - consequently, the above fixes introduced a lot of small regressions, so in order to see real improvements on reftests, I fixed the regressions in this patch:
     - replace margin by padding in some case where padding is a part of a container dimensions;
     - remove some flex display: some containers are wrongly sized when rendered;
     - set letter-spacing to 0.01px: it helps to be sure that text is not broken because of not enough width in Firefox.

src/core/calibri_factors.js

@@ -81,6 +81,7 @@ const CalibriBoldFactors = [
   0.95794, 0.95794, 0.82616, 0.86513, 0.85162, 0.85162, 0.85162, 0.85162,
   0.91133, 0.85162, 0.79492, 0.79492, 0.79492, 0.79492, 0.91133, 0.79109,
 ];
+const CalibriBoldLineHeight = 1.2207;
 
 // Factors to rescale LiberationSans-BoldItalic.ttf to have the same
 // metrics as calibriz.ttf.
@@ -152,6 +153,7 @@ const CalibriBoldItalicFactors = [
   0.84548, 0.84548, 0.91133, 0.84548, 0.79492, 0.79492, 0.79492, 0.79492,
   0.91133, 0.74081,
 ];
+const CalibriBoldItalicLineHeight = 1.2207;
 
 // Factors to rescale LiberationSans-Italic.ttf to have the same
 // metrics as calibrii.ttf.
@@ -221,6 +223,7 @@ const CalibriItalicFactors = [
   0.84153, 0.89453, 0.89453, 0.89453, 0.89453, 0.91133, 0.89453, 0.79004,
   0.79004, 0.79004, 0.79004, 0.91133, 0.75026,
 ];
+const CalibriItalicLineHeight = 1.2207;
 
 // Factors to rescale LiberationSans-Regular.ttf to have the same
 // metrics as calibri.ttf.
@@ -291,10 +294,15 @@ const CalibriRegularFactors = [
   0.83969, 0.90527, 0.90527, 0.90527, 0.90527, 0.91133, 0.90527, 0.79004,
   0.79004, 0.79004, 0.79004, 0.91133, 0.78848,
 ];
+const CalibriRegularLineHeight = 1.2207;
 
 export {
   CalibriBoldFactors,
   CalibriBoldItalicFactors,
+  CalibriBoldItalicLineHeight,
+  CalibriBoldLineHeight,
   CalibriItalicFactors,
+  CalibriItalicLineHeight,
   CalibriRegularFactors,
+  CalibriRegularLineHeight,
 };