Turn the e-ink backlight on for any brightness value over 0 (#8481)

src/graphics/draw/MenuHandler.cpp

@@ -515,7 +515,7 @@ void menuHandler::homeBaseMenu()
             }
             saveUIConfig();
 #elif defined(PCA_PIN_EINK_EN)
-            if (uiconfig.screen_brightness == 1) {
+            if (uiconfig.screen_brightness > 0) {
                 uiconfig.screen_brightness = 0;
                 io.digitalWrite(PCA_PIN_EINK_EN, LOW);
             } else {