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 tmpCanvas = this.cachedCanvases.getCanvas("inlineImage", w, h);
      const tmpCtx = tmpCanvas.context;
      putBinaryImageData(tmpCtx, imgData, this.current.transferMaps);
      for (let i = 0, ii = map.length; i < ii; i++) {
        const entry = map[i];
        ctx.save();
        ctx.transform.apply(ctx, entry.transform);
        ctx.scale(1, -1);
        ctx.drawImage(
          tmpCanvas.canvas,
          entry.x,
          entry.y,
          entry.w,
          entry.h,
          0,
          -1,
          1,
          1
        );
        if (this.imageLayer) {
          const position = this.getCanvasPosition(entry.x, entry.y);
          this.imageLayer.appendImage({
            imgData,
            left: position[0],
            top: position[1],
            width: w,
            height: h,
          });
        }
        ctx.restore();