use the monospaced font for the art on the end screen

because ascii art. Also, vertically align the “Last Words:” label in
front of the textbox, so that the baselines of the two are lined up.

Partially fixes #77297

src/game.cpp

@@ -2956,6 +2956,7 @@ void end_screen_ui_impl::draw_controls()
     }
 
     if( art.is_valid() ) {
+        cataimgui::PushMonoFont();
         int row = 1;
         for( const std::string &line : art->picture ) {
             cataimgui::draw_colored_text( line );
@@ -2969,10 +2970,12 @@ void end_screen_ui_impl::draw_controls()
             }
             row++;
         }
+        ImGui::PopFont();
     }
 
     if( !input_label.empty() ) {
         ImGui::NewLine();
+        ImGui::AlignTextToFramePadding();
         cataimgui::draw_colored_text( input_label );
         ImGui::SameLine( str_width_to_pixels( input_label.size() + 2 ), 0 );
         ImGui::InputText( "##LAST_WORD_BOX", text.data(), text.size() );