Fix up icon direction when RTL

(cherry picked from commit d32409bd6e68a3d5e32a69eb1b3afbb407741a00)

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

@@ -10,6 +10,7 @@ import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.material.TextFieldDefaults
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.outlined.ArrowBack
+import androidx.compose.material.icons.outlined.ArrowForward
 import androidx.compose.material.icons.outlined.Close
 import androidx.compose.material.icons.outlined.MoreVert
 import androidx.compose.material.icons.outlined.Search
@@ -38,12 +39,14 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.SolidColor
 import androidx.compose.ui.graphics.vector.ImageVector
 import androidx.compose.ui.platform.LocalFocusManager
+import androidx.compose.ui.platform.LocalLayoutDirection
 import androidx.compose.ui.platform.LocalSoftwareKeyboardController
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.input.ImeAction
 import androidx.compose.ui.text.input.VisualTransformation
 import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.LayoutDirection
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import eu.kanade.tachiyomi.R
@@ -62,7 +65,7 @@ fun AppBar(
     subtitle: String? = null,
     // Up button
     navigateUp: (() -> Unit)? = null,
-    navigationIcon: ImageVector = Icons.Outlined.ArrowBack,
+    navigationIcon: ImageVector? = null,
     // Menu
     actions: @Composable RowScope.() -> Unit = {},
     // Action mode
@@ -107,7 +110,7 @@ fun AppBar(
     titleContent: @Composable () -> Unit,
     // Up button
     navigateUp: (() -> Unit)? = null,
-    navigationIcon: ImageVector = Icons.Outlined.ArrowBack,
+    navigationIcon: ImageVector? = null,
     // Menu
     actions: @Composable RowScope.() -> Unit = {},
     // Action mode
@@ -131,10 +134,7 @@ fun AppBar(
                 } else {
                     navigateUp?.let {
                         IconButton(onClick = it) {
-                            Icon(
-                                imageVector = navigationIcon,
-                                contentDescription = stringResource(R.string.abc_action_bar_up_description),
-                            )
+                            UpIcon(navigationIcon)
                         }
                     }
                 }
@@ -360,6 +360,16 @@ fun SearchToolbar(
     )
 }
 
+@Composable
+fun UpIcon(navigationIcon: ImageVector? = null) {
+    val icon = navigationIcon
+        ?: if (LocalLayoutDirection.current == LayoutDirection.Ltr) Icons.Outlined.ArrowBack else Icons.Outlined.ArrowForward
+    Icon(
+        imageVector = icon,
+        contentDescription = stringResource(R.string.abc_action_bar_up_description),
+    )
+}
+
 sealed interface AppBar {
     sealed interface AppBarAction