Don't enable usb msc when the database is updating

lua/settings.lua

@@ -457,7 +457,7 @@ settings.MassStorageSettings = SettingsScreen:new {
 
     local busy_text = self.content:Label {
       w = lvgl.PCT(100),
-      text = "USB is currently busy. Do not unplug or remove the SD card.",
+      text = "",
       long_mode = lvgl.LABEL.LONG_WRAP,
     }
 
@@ -470,7 +470,7 @@ settings.MassStorageSettings = SettingsScreen:new {
     end
 
     enable_sw:onevent(lvgl.EVENT.VALUE_CHANGED, function()
-      if not usb.msc_busy:get() then
+      if not usb.msc_busy:get() and not database.updating:get() then
         usb.msc_enabled:set(enable_sw:enabled())
       end
       bind_switch()
@@ -484,6 +484,19 @@ settings.MassStorageSettings = SettingsScreen:new {
         else
           busy_text:add_flag(lvgl.FLAG.HIDDEN)
         end
+      end),
+      database.updating:bind(function(updating)
+        if updating then
+          busy_text:clear_flag(lvgl.FLAG.HIDDEN)
+          busy_text:set {
+            text = "Your database is currently updating. Please wait."
+          }
+        else
+          busy_text:add_flag(lvgl.FLAG.HIDDEN)
+          busy_text:set {
+            text = "USB is currently busy. Do not unplug or remove the SD card."
+          }
+        end
       end)
     }
   end,