Clean up preference extensions/items a bit

(cherry picked from commit cf14831fbe6d3b6b07d0fe185194d27d6ac6ae17)

# Conflicts:
#	app/src/main/java/eu/kanade/presentation/more/settings/PreferenceItem.kt
#	app/src/main/java/eu/kanade/presentation/more/settings/screen/SettingsAdvancedScreen.kt
#	app/src/main/java/eu/kanade/presentation/reader/settings/GeneralSettingsPage.kt
#	app/src/main/java/eu/kanade/presentation/reader/settings/ReadingModePage.kt
#	app/src/main/java/eu/kanade/tachiyomi/ui/library/LibrarySettingsScreenModel.kt
#	app/src/main/java/eu/kanade/tachiyomi/ui/reader/loader/HttpPageLoader.kt

presentation-core/src/main/java/tachiyomi/presentation/core/components/SettingsItems.kt

@@ -40,8 +40,11 @@ import androidx.compose.ui.graphics.painter.Painter
 import androidx.compose.ui.graphics.vector.ImageVector
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
+import tachiyomi.core.preference.Preference
 import tachiyomi.core.preference.TriState
+import tachiyomi.core.preference.toggle
 import tachiyomi.presentation.core.theme.header
+import tachiyomi.presentation.core.util.collectAsState
 
 object SettingsItemsPaddings {
     val Horizontal = 24.dp
@@ -119,6 +122,19 @@ fun SortItem(
     )
 }
 
+@Composable
+fun CheckboxItem(
+    label: String,
+    pref: Preference<Boolean>,
+) {
+    val checked by pref.collectAsState()
+    CheckboxItem(
+        label = label,
+        checked = checked,
+        onClick = { pref.toggle() },
+    )
+}
+
 @Composable
 fun CheckboxItem(
     label: String,

presentation-core/src/main/java/tachiyomi/presentation/core/util/Preference.kt

@@ -0,0 +1,13 @@
+package tachiyomi.presentation.core.util
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.State
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.remember
+import tachiyomi.core.preference.Preference
+
+@Composable
+fun <T> Preference<T>.collectAsState(): State<T> {
+    val flow = remember(this) { changes() }
+    return flow.collectAsState(initial = get())
+}