fix: test flakiness

Clicking on elements instead of pixel coordinates. ALso switched to `to_be_in_viewport` from `to_be_visible`

tests/integration/menu_test.py

@@ -44,7 +44,7 @@ def on_click():
 
     child_button = page_session.locator("text=child")
     page_session.wait_for_timeout(350)  # Wait for any animations after click
-    expect(page_session.locator(".test-class-child")).to_be_visible
+    expect(page_session.locator(".test-class-child")).to_be_visible()
     child_button.click()
     page_session.wait_for_timeout(350)
     expect(text_el).to_contain_text("Works!")
@@ -58,7 +58,7 @@ def test_menus_successive(test_type, solara_test, page_session: Page):
 
     @solara.component
     def Page():
-        menu_activator = solara.Div(style="height: 200px; width: 400px;")
+        menu_activator = solara.Div(style="height: 200px; width: 400px;", classes=["test-class-activator"])
         menu_child = solara.Div(classes=["test-class-menu"], style="height: 100px; width: 50px;")
 
         if test_type == "Menu":
@@ -70,19 +70,21 @@ def Page():
 
     solara.display(Page())
 
+    activator_el = page_session.locator(".test-class-activator")
     expect(page_session.locator(".test-class-menu")).to_have_count(0)  # Menu should not exist yet
     if test_type == "ContextMenu":
-        page_session.mouse.click(10, 10, button="right")
+        activator_el.click(button="right")
     else:
-        page_session.mouse.click(10, 10)
+        activator_el.click()
 
     page_session.wait_for_timeout(350)  # Wait for any animations after click
-    expect(page_session.locator(".test-class-menu")).to_be_visible()  # Menu should be visible now
+    expect(page_session.locator(".test-class-menu")).to_be_in_viewport()  # Menu should be visible now
+
     if test_type == "ContextMenu":
-        page_session.mouse.click(350, 10, button="right")
+        activator_el.click(button="right")
         page_session.wait_for_timeout(350)
-        expect(page_session.locator(".test-class-menu")).to_be_visible()
+        expect(page_session.locator(".test-class-menu")).to_be_in_viewport()
     else:
-        page_session.mouse.click(350, 10)
+        activator_el.click()
         page_session.wait_for_timeout(350)
-        expect(page_session.locator(".test-class-menu")).not_to_be_visible()  # After second click, Menu and ClickMenu should disappear
+        expect(page_session.locator(".test-class-menu")).not_to_be_in_viewport()  # After second click, Menu and ClickMenu should disappear