stop-reload-button in 139

                @-moz-document url-prefix('chrome://browser/content/browser.x') {
                    #stop-reload-button {
                        display: none;
                    }
                    #new-stop-reload-button {
                        display: flex !important;
                        order: 9999;
                    }
                    #new-stop-reload-button .urlbar-icon {
                        -moz-context-properties: fill, fill-opacity !important;
                        fill: currentColor !important;
                    }
                }