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
```

ctx.strokeStyle = strokeColor.getPattern(ctx, this);
          const lineWidth = this.getSinglePixelWidth();
          if (lineWidth === -1) {
            ctx.resetTransform();
            ctx.lineWidth = 1;
          } else {
            ctx.lineWidth = Math.max(lineWidth, this.current.lineWidth * scale);
          }
          ctx.stroke();
          ctx.restore();
        } else {
          const lineWidth = this.getSinglePixelWidth();
          if (lineWidth === -1) {
            
            
            ctx.save();
            ctx.resetTransform();
            ctx.lineWidth = 1;
            ctx.stroke();
            ctx.restore();
          } else {
            
            ctx.lineWidth = Math.max(lineWidth, this.current.lineWidth);
            ctx.stroke();
          }
        }
      }
      if (consumePath) {
        this.consumePath();
      }