[pattern.pdf](https://github.com/mozilla/pdf.js/files/4022310/pattern.pdf)

Configuration:
- Firefox Nightly 73.0a1 (2020-01-04)
- macOS Mojave 10.14.6
- PDF.js version: 2.4.254
- Is a browser extension: built-in

Steps to reproduce the problem:
1. Open the PDF, zoom in to 200% for a more detailed view

What is the expected behavior?
<img width="736" alt="pattern-acrobat" src="https://user-images.githubusercontent.com/9106997/71770714-34dc2600-2f30-11ea-958d-4fea6f2b53c2.png">

What went wrong?
<img width="563" alt="pattern-pdfjs" src="https://user-images.githubusercontent.com/9106997/71770723-4a515000-2f30-11ea-8a92-cef4cac2a8f8.png">

The crosshatch pattern is rendered by pdf.js using the wrong pattern style. The other pattern style just seem to have a broken redering.

TeX source of PDF:
```tex
\documentclass[a4paper,11pt]{scrartcl}
\usepackage{tikz}
\usetikzlibrary{patterns}

\begin{document}
crosshatch pattern:
\begin{tikzpicture}
\draw[draw=black, fill=black!10, pattern=crosshatch, pattern color=black] (0,0) rectangle (1,1);
\end{tikzpicture}
\\

north east lines pattern:
\begin{tikzpicture}
\draw[draw=black, fill=black!10, pattern=north east lines, pattern color=black] (0,0) rectangle (1,1);
\end{tikzpicture}
\\

north west lines pattern:
\begin{tikzpicture}
\draw[draw=black, fill=black!10, pattern=north west lines, pattern color=black] (0,0) rectangle (1,1);
\end{tikzpicture}
\\

grid pattern:
\begin{tikzpicture}
\draw[draw=black, fill=black!10, pattern=grid, pattern color=black] (0,0) rectangle (1,1);
\end{tikzpicture}
\end{document}
```
ctx.fillText(character, x, y);
        }
        if (
          fillStrokeMode === TextRenderingMode.STROKE ||
          fillStrokeMode === TextRenderingMode.FILL_STROKE
        ) {
          if (resetLineWidthToOne) {
            ctx.save();
            ctx.moveTo(x, y);
            ctx.resetTransform();
            ctx.lineWidth = Math.round(this._combinedScaleFactor);
            ctx.strokeText(character, 0, 0);
            ctx.restore();
          } else {
            ctx.strokeText(character, x, y);
          }
        }
      }
      if (isAddToPathSet) {
        const paths = this.pendingTextPaths || (this.pendingTextPaths = []);
        paths.push({
          transform: ctx.mozCurrentTransform,
          x,
          y,
          fontSize,
          addToPath,
        });
      }
    }
    get isFontSubpixelAAEnabled() {