More robust Gyro toggle (#5104)

* Make toggling Gyro events more robust

Actually ask to turn it on/off depending on the setting, instead of a
blind toggle

A quick succession of suspend/resume events could otherwise leave it
in an unexpected state (i.e., off when it should have been on).

frontend/ui/elements/screen_toggle_gsensor.lua

@@ -8,6 +8,6 @@ return {
     end,
     callback = function()
         G_reader_settings:flipNilOrFalse("input_ignore_gsensor")
-        Device:toggleGSensor()
+        Device:toggleGSensor(not G_reader_settings:isTrue("input_ignore_gsensor"))
     end,
 }