Upgrade Leaflet 1.9.3 to 1.9.4

1.9.3's _addFocusListenersOnLayer calls layer.getElement() unguarded, so
any GeoJSON layer containing a nested FeatureGroup throws
"t.getElement is not a function". 1.9.4 guards the call.

This also restores verify_js_logs() in the MultiPoint tooltip test, which
had to omit it for that reason. Because the driver fixture is
session-scoped, the unread error stayed in the browser log and surfaced
in whichever later test read it first — which is why
test_notebook[coordinate_ordering.md] has been failing on main despite
having no tooltips of its own.

Author: nina-mir

folium/folium.py

@@ -25,7 +25,7 @@
 )
 
 _default_js = [
-    ("leaflet", "https://cdn.jsdelivr.net/npm/leaflet@1.9.3/dist/leaflet.js"),
+    ("leaflet", "https://cdn.jsdelivr.net/npm/leaflet@1.9.4/dist/leaflet.js"),
     ("jquery", "https://code.jquery.com/jquery-3.7.1.min.js"),
     (
         "bootstrap",
@@ -38,7 +38,7 @@
 ]
 
 _default_css = [
-    ("leaflet_css", "https://cdn.jsdelivr.net/npm/leaflet@1.9.3/dist/leaflet.css"),
+    ("leaflet_css", "https://cdn.jsdelivr.net/npm/leaflet@1.9.4/dist/leaflet.css"),
     (
         "bootstrap_css",
         "https://cdn.jsdelivr.net/npm/bootstrap@5.2.2/dist/css/bootstrap.min.css",

tests/selenium/test_multipoints_tooltip_selenium.py

@@ -59,7 +59,4 @@ def test_geojson_multipoint_tooltip(driver):
         tooltip = driver.wait_until(".leaflet-tooltip.foliumtooltip")
         assert "multipoint" in tooltip.text
 
-    # No verify_js_logs() here: Leaflet 1.9.3 (our pin) throws
-    # "t.getElement is not a function" from _addFocusListenersOnLayer for any
-    # GeoJSON layer containing a nested FeatureGroup, independent of this fix.
-    # Guarded upstream in 1.9.4.
+        driver.verify_js_logs()