LibWeb: Don't handle media player key events if any modifier is pressed

Userland/Libraries/LibWeb/HTML/HTMLMediaElement.cpp

@@ -1914,8 +1914,11 @@ void HTMLMediaElement::reject_pending_play_promises(ReadonlySpan<JS::NonnullGCPt
         WebIDL::reject_promise(realm, promise, error);
 }
 
-WebIDL::ExceptionOr<bool> HTMLMediaElement::handle_keydown(Badge<Web::EventHandler>, UIEvents::KeyCode key)
+WebIDL::ExceptionOr<bool> HTMLMediaElement::handle_keydown(Badge<Web::EventHandler>, UIEvents::KeyCode key, u32 modifiers)
 {
+    if (modifiers != UIEvents::KeyModifier::Mod_None)
+        return false;
+
     switch (key) {
     case UIEvents::KeyCode::Key_Space:
         TRY(toggle_playback());

Userland/Libraries/LibWeb/HTML/HTMLMediaElement.h

@@ -109,7 +109,7 @@ public:
 
     JS::NonnullGCPtr<TextTrack> add_text_track(Bindings::TextTrackKind kind, String const& label, String const& language);
 
-    WebIDL::ExceptionOr<bool> handle_keydown(Badge<Web::EventHandler>, UIEvents::KeyCode);
+    WebIDL::ExceptionOr<bool> handle_keydown(Badge<Web::EventHandler>, UIEvents::KeyCode, u32 modifiers);
 
     enum class MouseTrackingComponent {
         Timeline,

Userland/Libraries/LibWeb/Page/EventHandler.cpp

@@ -890,7 +890,7 @@ bool EventHandler::handle_keydown(UIEvents::KeyCode key, u32 modifiers, u32 code
 
     if (auto* element = m_navigable->active_document()->focused_element(); is<HTML::HTMLMediaElement>(element)) {
         auto& media_element = static_cast<HTML::HTMLMediaElement&>(*element);
-        if (media_element.handle_keydown({}, key).release_value_but_fixme_should_propagate_errors())
+        if (media_element.handle_keydown({}, key, modifiers).release_value_but_fixme_should_propagate_errors())
             return true;
     }