Optimize the display logic of reboot drop down menu items

manager/app/src/main/java/com/sukisu/ultra/ui/screen/Home.kt

@@ -278,14 +278,7 @@ fun UpdateCard() {
 fun RebootDropdownItem(@StringRes id: Int, reason: String = "") {
     DropdownMenuItem(
         text = {Text(stringResource(id))}, 
-        onClick = { reboot(reason) },
-        leadingIcon = {
-            Icon(
-                imageVector = Icons.Filled.Refresh,
-                contentDescription = null,
-            )
-        }
-    )
+        onClick = {reboot(reason)})
     }
 
 @OptIn(ExperimentalMaterial3Api::class)

manager/app/src/main/java/com/sukisu/ultra/ui/screen/Module.kt

@@ -276,7 +276,7 @@ fun ModuleScreen(navigator: DestinationsNavigator) {
                                 text = { Text(stringResource(R.string.backup_modules)) },
                                 leadingIcon = {
                                     Icon(
-                                        imageVector = Icons.Outlined.Download,
+                                        imageVector = Icons.Outlined.Save,
                                         contentDescription = stringResource(R.string.backup),
                                     )
                                 },
@@ -289,7 +289,7 @@ fun ModuleScreen(navigator: DestinationsNavigator) {
                                 text = { Text(stringResource(R.string.restore_modules)) },
                                 leadingIcon = {
                                     Icon(
-                                        imageVector = Icons.Outlined.Refresh,
+                                        imageVector = Icons.Outlined.RestoreFromTrash,
                                         contentDescription = stringResource(R.string.restore),
                                     )
                                 },

manager/app/src/main/res/values/strings.xml

@@ -247,7 +247,7 @@
     <string name="home_click_to_ContributionCard_kernelsu">SukiSU Ultra will be a relatively independent branch of KSU in the future, but we still appreciate the official KernelSU and MKSU etc. for their contributions!</string>
     <string name="not_supported">Unsupported</string>
     <string name="supported">Supported</string>
-    <string name="home_kpm_module">"Number of KPM modules: %d "</string>
+    <string name="home_kpm_module">"Number of KPMs: %d "</string>
     <string name="kpm_invalid_file">Invalid KPM file</string>
     <string name="kernel_patched">Kernel not patched</string>
     <string name="kernel_not_enabled">Kernel not configured</string>