feat: Adapt BottomAppBar for accessibility

The BottomAppBar now adapts its behavior based on whether touch exploration is enabled in the accessibility settings. When touch exploration is enabled, it will always show the label in the navigation bar. Otherwise it will use the default `exitAlwaysScrollBehavior`.

Author: jing332

app/src/main/java/com/github/jing332/tts_server_android/compose/MainPager.kt

@@ -15,6 +15,7 @@ import androidx.compose.material3.NavigationBarItem
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.input.nestedscroll.nestedScroll
@@ -26,6 +27,7 @@ import com.github.jing332.tts_server_android.compose.systts.MigrationTips
 import com.github.jing332.tts_server_android.compose.systts.TtsLogScreen
 import com.github.jing332.tts_server_android.compose.systts.list.ListManagerScreen
 import kotlinx.coroutines.launch
+import splitties.systemservices.accessibilityManager
 
 @OptIn(
     ExperimentalFoundationApi::class, ExperimentalLayoutApi::class,
@@ -37,23 +39,27 @@ fun MainPager(sharedVM: SharedViewModel) {
     val scope = rememberCoroutineScope()
 
     MigrationTips()
-    val scrollBehavior = BottomAppBarDefaults.exitAlwaysScrollBehavior()
+    val allyEnabled = remember { accessibilityManager.isTouchExplorationEnabled }
+    val scrollBehavior = BottomAppBarDefaults.exitAlwaysScrollBehavior(canScroll = {
+        !allyEnabled
+    })
 
     Scaffold(
         modifier = Modifier.nestedScroll(scrollBehavior.nestedScrollConnection),
         bottomBar = {
             val containerColor = NavigationBarDefaults.containerColor
             InitSystemNavigation(containerColor)
             BottomAppBar(
-                modifier = Modifier.fillMaxWidth(),
+                modifier = Modifier
+                    .fillMaxWidth(),
                 containerColor = containerColor,
                 scrollBehavior = scrollBehavior,
                 actions = {
                     for (destination in PagerDestination.routes) {
                         val isSelected = pagerState.currentPage == destination.index
                         NavigationBarItem(
                             selected = isSelected,
-                            alwaysShowLabel = false,
+                            alwaysShowLabel = allyEnabled,
                             onClick = {
                                 scope.launch {
                                     pagerState.animateScrollToPage(destination.index)