🧵 Fix race condition in test

Clicking the accept button fires a fetch call, which sometimes
completes before playwright navigates to the page again,
sometimes not.

This results in the accepted cookies state not being recorded,
in turn causing the test to fail.

Adding an assertion guarantees that the fetch call completed
before we 'refresh' the page.

tests/test_javascript_cookiebar.py

@@ -71,6 +71,9 @@ def test_cookiebar_not_shown_anymore_after_accept_or_decline(btn_text: str, page
 def test_on_accept_handler_runs_on_load(page: Page, live_server):
     accept_button = page.get_by_role("button", name="Accept")
     accept_button.click()
+    # wait for fetch calls to complete & avoid test race conditions...
+    share_button = page.get_by_role("button", name="SHARE")
+    expect(share_button).to_be_visible()
 
     test_page_url = f"{live_server.url}{reverse('test_page')}"
     page.goto(test_page_url)