delete unknown json objects + write missing objects to config file

Modules/Settings/Pages/ScreenshotPage.qml

@@ -70,10 +70,7 @@ PageBase {
 				}
 			]
 
-			onSelected: item => {
-				Config.screenshot.mode = item.value;
-				Config.save();
-			}
+			onSelected: item => Config.screenshot.mode = item.value
 		}
 
 		SectionHeader {

Modules/Settings/Pages/WallpaperPage.qml

@@ -104,7 +104,6 @@ PageBase {
 					onApplySettings: (start, end) => {
 						Config.general.color.scheduleDarkStart = start;
 						Config.general.color.scheduleDarkEnd = end;
-						Config.save();
 						ModeScheduler.checkStartup();
 						PopupManager.requestClose();
 					}
@@ -146,7 +145,6 @@ PageBase {
 					onApplySettings: (start, end) => {
 						Config.general.color.scheduleHyprsunsetStart = start;
 						Config.general.color.scheduleHyprsunsetEnd = end;
-						Config.save();
 						Hyprsunset.checkStartup();
 						PopupManager.requestClose();
 					}