Alternate title: _Applying #6684-similar fix to stroke_
#6684 makes sure the "current" transformation, at the moment of filling radial gradients is the `baseTransform` (that of the rescource (page), as it says in the specs). However, this should also be fixed in [`CanvasGraphics_stroke`](https://github.com/dsprenkels/pdf.js/blob/a9081653fc565eb72c3eb5142c17088cb162e7ce/src/display/canvas.js#L1052).

if (!this.contentVisible) {
        return;
      }
      this.groupLevel--;
      const groupCtx = this.ctx;
      this.ctx = this.groupStack.pop();
      
      
      if (this.ctx.imageSmoothingEnabled !== undefined) {
        this.ctx.imageSmoothingEnabled = false;
      } else {
        this.ctx.mozImageSmoothingEnabled = false;
      }
      if (group.smask) {
        this.tempSMask = this.smaskStack.pop();
      } else {
        this.ctx.drawImage(groupCtx.canvas, 0, 0);
      }
      this.restore();
    }
    beginAnnotations() {
      this.save();
      if (this.baseTransform) {
        this.ctx.setTransform.apply(this.ctx, this.baseTransform);
      }
    }
    endAnnotations() {