GUIs are supposed to call enableRepeatEvents() from initGui() and onGuiClosed() to properly handle repeated key events. This change adds the appropriate calls in GuiBase. See the equivalent code in eg. Applied Energistics 2:cc9b33b473/src/main/java/appeng/client/gui/implementations/GuiMEMonitorable.java (L224)cc9b33b473/src/main/java/appeng/client/gui/implementations/GuiMEMonitorable.java (L399)Fixes https://github.com/raoulvdberge/refinedstorage/issues/1762