Mark some state data classes as immutable

(cherry picked from commit 54733e6ceb541d314687f46f5a01cf2f08dec89e)

# Conflicts:
#	app/src/main/java/eu/kanade/tachiyomi/ui/browse/migration/search/MigrateDialog.kt
#	app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderViewModel.kt

app/src/main/java/eu/kanade/tachiyomi/ui/manga/track/TrackInfoDialog.kt

@@ -20,6 +20,7 @@ import androidx.compose.material3.SelectableDates
 import androidx.compose.material3.Text
 import androidx.compose.material3.TextButton
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.Immutable
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
@@ -265,6 +266,7 @@ data class TrackInfoDialogHomeScreen(
                 .filter { (it.service as? EnhancedTrackService)?.accept(source) ?: true }
         }
 
+        @Immutable
         data class State(
             val trackItems: List<TrackItem> = emptyList(),
         )
@@ -314,6 +316,7 @@ private data class TrackStatusSelectorScreen(
             }
         }
 
+        @Immutable
         data class State(
             val selection: Int,
         )
@@ -369,6 +372,7 @@ private data class TrackChapterSelectorScreen(
             }
         }
 
+        @Immutable
         data class State(
             val selection: Int,
         )
@@ -419,6 +423,7 @@ private data class TrackScoreSelectorScreen(
             }
         }
 
+        @Immutable
         data class State(
             val selection: String,
         )
@@ -724,6 +729,7 @@ data class TrackServiceSearchScreen(
             mutableState.update { it.copy(selected = selected) }
         }
 
+        @Immutable
         data class State(
             val queryResult: Result<List<TrackSearch>>? = null,
             val selected: TrackSearch? = null,

app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderViewModel.kt

@@ -4,6 +4,7 @@ import android.app.Application
 import android.content.Context
 import android.net.Uri
 import androidx.annotation.ColorInt
+import androidx.compose.runtime.Immutable
 import androidx.lifecycle.SavedStateHandle
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
@@ -1069,16 +1070,12 @@ class ReaderViewModel(
         }
     }
 
-    /**
-     * Results of the set as cover feature.
-     */
     enum class SetAsCoverResult {
-        Success, AddToLibraryFirst, Error
+        Success,
+        AddToLibraryFirst,
+        Error,
     }
 
-    /**
-     * Results of the save image feature.
-     */
     sealed class SaveImageResult {
         class Success(val uri: Uri) : SaveImageResult()
         class Error(val error: Throwable) : SaveImageResult()
@@ -1130,6 +1127,7 @@ class ReaderViewModel(
         }
     }
 
+    @Immutable
     data class State(
         val manga: Manga? = null,
         val viewerChapters: ViewerChapters? = null,