Safebrowsing doesn't work on anything other than the hardcoded URLs.

The following should come up with a Safebrowsing phishing page, but doesn't. All the settings for Safebrowsing should be correct.

import time
from playwright.sync_api import sync_playwright, TimeoutError, Error

firefox_preferences = {'browser.safebrowsing.blockedURIs.enabled': True,
                       'browser.safebrowsing.downloads.enabled': True,
                       'browser.safebrowsing.malware.enabled': True,
                       'browser.safebrowsing.phishing.enabled': True,
                       'browser.safebrowsing.provider.mozilla.updateURL': 'https://shavar.services.mozilla.com/downloads?client=SAFEBROWSING_ID&appver=%MAJOR_VERSION%&pver=2.2'}

with sync_playwright() as p:
    # https://playwright.dev/python/docs/api/class-browsertype#browser-type-launch-option-firefox-user-prefs
    browser = p.firefox.launch(headless=False, firefox_user_prefs=firefox_preferences)
    context = browser.new_context(ignore_https_errors=False)
    context.set_default_timeout(30000)
    page = context.new_page()
    try:
        # http://itisatrap.org/firefox/unwanted.html
        # http://itisatrap.org/firefox/its-a-trap.html
        # http://itisatrap.org/firefox/its-an-attack.html
        page.goto('https://testsafebrowsing.appspot.com/s/phishing.html')
    except Error as e:
        if 'NS_ERROR_MALWARE_URI' in str(e):
            print('MALWARE')
        elif 'NS_ERROR_PHISHING_URI' in str(e):
            print('PHISHING')
        elif 'NS_ERROR_UNWANTED_URI' in str(e):
            print('UNWANTED')
        else:
            print(f'Uncaught exception: {str(e)}')
    time.sleep(45)
    context.close()
    browser.close()