Fix previous commit

The value should be null to always get all cookies and not only first-party isolation cookies.

From https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/cookies:
"When first-party isolation is off, the firstPartyDomain parameter is optional and defaults to an empty string.  A non-empty string can be used to retrieve or modify first-party isolation cookies."

src/drivers/webextension/js/driver.js

@@ -146,7 +146,7 @@ browser.runtime.onConnect.addListener((port) => {
 
     const url = wappalyzer.parseUrl(port.sender.tab ? port.sender.tab.url : '');
 
-    const cookies = await browser.cookies.getAll({ domain: `.${url.hostname}`, firstPartyDomain: `.${url.hostname}` });
+    const cookies = await browser.cookies.getAll({ domain: `.${url.hostname}`, firstPartyDomain: null });
 
     let response;