Address some build warnings and cleanup (#1412)

(cherry picked from commit a1c60897916f418726107fec80ad79b2a4b8d500)

i18n/build.gradle.kts

@@ -1,6 +1,6 @@
 import mihon.buildlogic.generatedBuildDir
 import mihon.buildlogic.tasks.getLocalesConfigTask
-import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+import org.jetbrains.kotlin.gradle.ExperimentalKotlinGradlePluginApi
 
 plugins {
     id("mihon.library")
@@ -21,6 +21,11 @@ kotlin {
             }
         }
     }
+
+    @OptIn(ExperimentalKotlinGradlePluginApi::class)
+    compilerOptions {
+        freeCompilerArgs.add("-Xexpect-actual-classes")
+    }
 }
 
 val generatedAndroidResourceDir = generatedBuildDir.resolve("android/res")
@@ -50,10 +55,4 @@ tasks {
     preBuild {
         dependsOn(localesConfigTask)
     }
-
-    withType<KotlinCompile> {
-        compilerOptions.freeCompilerArgs.addAll(
-            "-Xexpect-actual-classes",
-        )
-    }
 }

i18n/src/commonMain/moko-resources/base/strings.xml

@@ -540,7 +540,7 @@
     <string name="backup_restore_missing_trackers">Trackers not logged into:</string>
     <string name="backup_restore_content_full">You may need to install any missing extensions and log in to tracking services afterwards to use them.</string>
     <string name="restore_completed">Restore completed</string>
-    <string name="restore_duration">%02d min, %02d sec</string>
+    <string name="restore_duration">%1$02d min, %2$02d sec</string>
     <string name="backup_in_progress">Backup is already in progress</string>
     <string name="backup_choice">What do you want to backup?</string>
     <string name="app_settings">App settings</string>