android: remove TopAppBar scroll out behaviour

I'm not a fan of this behaviour.

This fully reverts commit 0ce95ef770 and partially reverts commit 0db4e48613.

android/src/main/kotlin/dev/msfjarvis/claw/android/ui/LobstersApp.kt

@@ -2,30 +2,20 @@ package dev.msfjarvis.claw.android.ui
 
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.lazy.rememberLazyListState
-import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.filled.ArrowBack
 import androidx.compose.material3.ExperimentalMaterial3Api
-import androidx.compose.material3.Icon
-import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Scaffold
-import androidx.compose.material3.Text
-import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.SideEffect
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
-import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.input.nestedscroll.nestedScroll
 import androidx.compose.ui.platform.LocalConfiguration
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.platform.LocalUriHandler
 import androidx.compose.ui.res.painterResource
-import androidx.compose.ui.res.stringResource
-import androidx.compose.ui.text.font.FontWeight
 import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
@@ -66,7 +56,6 @@ fun LobstersApp(
   val coroutineScope = rememberCoroutineScope()
   val postActions = rememberPostActions(urlLauncher, navController, viewModel)
   val currentDestination by currentNavigationDestination(navController)
-  val scrollBehavior = remember { TopAppBarDefaults.enterAlwaysScrollBehavior() }
 
   val networkPosts = viewModel.pagerFlow.collectAsLazyPagingItems()
   val savedPosts by viewModel.savedPosts.collectAsState(emptyList())
@@ -108,27 +97,10 @@ fun LobstersApp(
       }
 
       Scaffold(
-        modifier = Modifier.nestedScroll(scrollBehavior.nestedScrollConnection),
         topBar = {
           ClawAppBar(
             modifier = Modifier.statusBarsPadding(),
             backgroundColor = systemBarsColor,
-            scrollBehavior = scrollBehavior,
-            navigationIcon = {
-              if (navItems.none { it.route == currentDestination }) {
-                IconButton(onClick = { navController.popBackStack() }) {
-                  Icon(
-                    imageVector = Icons.Filled.ArrowBack,
-                    contentDescription = "Go back to previous screen"
-                  )
-                }
-              }
-            },
-            title = {
-              if (navItems.any { it.route == currentDestination }) {
-                Text(text = stringResource(R.string.app_name), fontWeight = FontWeight.Bold)
-              }
-            }
           )
         },
         bottomBar = {

android/src/main/kotlin/dev/msfjarvis/claw/android/ui/decorations/ClawAppBar.kt

@@ -1,25 +1,28 @@
 package dev.msfjarvis.claw.android.ui.decorations
 
 import androidx.compose.material3.SmallTopAppBar
+import androidx.compose.material3.Text
 import androidx.compose.material3.TopAppBarDefaults
-import androidx.compose.material3.TopAppBarScrollBehavior
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontWeight
+import dev.msfjarvis.claw.android.R
 
 @Composable
 fun ClawAppBar(
   backgroundColor: Color,
-  scrollBehavior: TopAppBarScrollBehavior? = null,
-  navigationIcon: @Composable () -> Unit = {},
-  title: @Composable () -> Unit = {},
   modifier: Modifier = Modifier,
 ) {
   SmallTopAppBar(
-    title = title,
+    title = {
+      Text(
+        text = stringResource(R.string.app_name),
+        fontWeight = FontWeight.Bold,
+      )
+    },
     modifier = modifier,
     colors = TopAppBarDefaults.smallTopAppBarColors(containerColor = backgroundColor),
-    scrollBehavior = scrollBehavior,
-    navigationIcon = navigationIcon
   )
 }