fix(org-chart): improve auto connector contrast and test portability

examples/org-chart/verify-p5-23.mjs

@@ -1,11 +1,11 @@
+import { loadPlaywright, launchChromium } from '../../scripts/orgchart-browser-runtime.mjs';
 import fs from 'node:fs/promises';
 import http from 'node:http';
 import path from 'node:path';
-import { fileURLToPath, pathToFileURL } from 'node:url';
+import { fileURLToPath } from 'node:url';
 const root = fileURLToPath(new URL('../../', import.meta.url));
 const output = path.join(root, 'test-results/org-chart-p5-23');
-const playwright = process.env.ORGCHART_PLAYWRIGHT_MODULE;
-const { chromium } = await import(playwright ? pathToFileURL(playwright).href : 'playwright');
+await loadPlaywright();
 const story = process.env.ORGCHART_STORY_ORIGIN ?? 'http://127.0.0.1:6054';
 const html = process.env.ORGCHART_HTML_ORIGIN ?? 'http://127.0.0.1:4189';
 const fixtures = Object.fromEntries(await Promise.all(['small', 'medium', 'large'].map(async size => [size, JSON.parse(await fs.readFile(path.join(root, `examples/org-chart/data-expanded-${size}.json`), 'utf8'))])));
@@ -25,7 +25,7 @@ const server = http.createServer(async (request, response) => {
 await new Promise(resolve => server.listen(0, '127.0.0.1', resolve));
 const origin = `http://127.0.0.1:${server.address().port}`;
 await fs.mkdir(output, { recursive: true });
-const browser = await chromium.launch({ executablePath: process.env.ORGCHART_CHROME ?? 'C:/Program Files/Google/Chrome/Application/chrome.exe', headless: true });
+const browser = await launchChromium({ headless: true });
 const page = await browser.newPage({ viewport: { width: 1440, height: 1000 } });
 page.on('pageerror', error => errors.push(error.message));
 page.on('console', message => { if (message.type() === 'error') errors.push(message.text()); });