Accept keyword arguments in page header render_in

Upstream's render_in kwargs change updated the beta and tree_view
components but not the OpenProject-namespaced PageHeader::Dialog and
PageHeader::Menu overrides, which would still raise if render_in is
called with keywords. Mirror the sibling pattern (accept and ignore
**_kwargs).

Author: myabc

app/components/primer/open_project/page_header/dialog.rb

@@ -19,7 +19,7 @@ def initialize(dialog_arguments: {}, button_arguments: {})
           end
         end
 
-        def render_in(view_context, &block)
+        def render_in(view_context, **_kwargs, &block)
           super(view_context) do
             block&.call(@dialog, @button)
           end

app/components/primer/open_project/page_header/menu.rb

@@ -19,7 +19,7 @@ def initialize(menu_arguments: {}, button_arguments: {})
           end
         end
 
-        def render_in(view_context, &block)
+        def render_in(view_context, **_kwargs, &block)
           super(view_context) do
             block&.call(@menu, @button)
           end