chore: add separate reference files for different platforms

Turns out, generated PDFs differ slightly from platform to platform. As the previous reference file I generated comes from macOS, it fails when E2E is ran on linux. This fixes that by introducing platform-specific reference files.

Note: without diegomura#2633, E2E will error, and without diegomura#2635, CJS E2E will still fail.

e2e/node-cjs/index.js

@@ -1,9 +1,12 @@
 const fs = require('node:fs/promises');
+const os = require('node:os');
 const assert = require('node:assert');
 const { test } = require('node:test');
 const { jsx } = require('react/jsx-runtime');
 const { Document, Page, Text, renderToBuffer } = require('@react-pdf/renderer');
 
+const platform = os.platform();
+
 const MyDocument = () =>
   jsx(Document, {
     children: jsx(Page, {
@@ -28,7 +31,7 @@ function removeMovingParts(buffer) {
 
 test('rendering a PDF', async () => {
   const bufferPromise = renderToBuffer(jsx(MyDocument, {}));
-  const referenceBufferPromise = fs.readFile('../reference.pdf');
+  const referenceBufferPromise = fs.readFile(`../reference-${platform}.pdf`);
 
   const [buffer, referenceBuffer] = await Promise.all([
     bufferPromise,

e2e/node-esm/index.js

@@ -1,9 +1,12 @@
 import fs from 'node:fs/promises';
+import os from 'node:os';
 import assert from 'node:assert';
 import { test } from 'node:test';
 import { jsx } from 'react/jsx-runtime';
 import { Document, Page, Text, renderToBuffer } from '@react-pdf/renderer';
 
+const platform = os.platform();
+
 const MyDocument = () =>
   jsx(Document, {
     children: jsx(Page, {
@@ -28,7 +31,7 @@ function removeMovingParts(buffer) {
 
 test('rendering a PDF', async () => {
   const bufferPromise = renderToBuffer(jsx(MyDocument, {}));
-  const referenceBufferPromise = fs.readFile('../reference.pdf');
+  const referenceBufferPromise = fs.readFile(`../reference-${platform}.pdf`);
 
   const [buffer, referenceBuffer] = await Promise.all([
     bufferPromise,