Bring back simplified relative timestamp setting

Except now it's just an on/off toggle for relative up to a week.

app/src/main/java/eu/kanade/presentation/components/RelativeDateHeader.kt

@@ -3,6 +3,8 @@ package eu.kanade.presentation.components
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.remember
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import eu.kanade.tachiyomi.util.lang.toRelativeString
 import tachiyomi.presentation.core.components.ListGroupHeader
 import java.text.DateFormat
 import java.util.Date
@@ -11,12 +13,18 @@ import java.util.Date
 fun RelativeDateHeader(
     modifier: Modifier = Modifier,
     date: Date,
+    relativeTime: Boolean,
     dateFormat: DateFormat,
 ) {
+    val context = LocalContext.current
     ListGroupHeader(
         modifier = modifier,
         text = remember {
-            dateFormat.format(date)
+            date.toRelativeString(
+                context,
+                relativeTime,
+                dateFormat,
+            )
         },
     )
 }