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).

const ps = figure.coords;
    const cs = figure.colors;
    let i, ii;
    switch (figure.type) {
      case "lattice":
        const verticesPerRow = figure.verticesPerRow;
        const rows = Math.floor(ps.length / verticesPerRow) - 1;
        const cols = verticesPerRow - 1;
        for (i = 0; i < rows; i++) {
          let q = i * verticesPerRow;
          for (let j = 0; j < cols; j++, q++) {
            drawTriangle(
              data,
              context,
              ps[q],
              ps[q + 1],
              ps[q + verticesPerRow],
              cs[q],
              cs[q + 1],
              cs[q + verticesPerRow]
            );
            drawTriangle(
              data,
              context,