This is a regression from PR #4615. The underscore for the last 2 chars in "NUMERO D’IMMATRICULATION" is too bold.

URL: http://www.ameli.fr/fileadmin/user_upload/formulaires/S3706.pdf
1.1.215: https://i.imgur.com/up8Y33j.png
0.8.990: https://i.imgur.com/UioZcLB.png

fc1e2483b433134a538cce0acd0ccc76e335cf5f is the first bad commit
commit fc1e2483b433134a538cce0acd0ccc76e335cf5f
Author: Jonas Jenwald
Date:   Fri Apr 11 20:19:39 2014 +0200

```
Enforce minimum line widths
```

const operatorList = font.charProcOperatorList[glyph.operatorListId];
        if (!operatorList) {
          warn(`Type3 character "${glyph.operatorListId}" is not available.`);
          continue;
        }
        if (this.contentVisible) {
          this.processingType3 = glyph;
          this.save();
          ctx.scale(fontSize, fontSize);
          ctx.transform.apply(ctx, fontMatrix);
          this.executeOperatorList(operatorList);
          this.restore();
        }
        const transformed = Util.applyTransform([glyph.width, 0], fontMatrix);
        width = transformed[0] * fontSize + spacing;
        ctx.translate(width, 0);
        current.x += width * textHScale;
      }
      ctx.restore();
      this.processingType3 = null;
    },
    
    setCharWidth: function CanvasGraphics_setCharWidth(xWidth, yWidth) {
      
      
    },
    setCharWidthAndBounds: function CanvasGraphics_setCharWidthAndBounds(
      xWidth,
      yWidth,
      llx,