Remove top app bar scroll behavior

This lets us make it more consistent with the Compose screens for now. Maybe it'll return in the future.

This also includes making the AboutController a full Compose controller with a new abstracted TopAppBar composable.

app/src/main/java/eu/kanade/tachiyomi/ui/base/controller/ComposeController.kt

@@ -73,6 +73,27 @@ abstract class BasicComposeController :
     }
 }
 
+/**
+ * Basic Compose controller without a presenter.
+ */
+abstract class BasicFullComposeController :
+    BaseController<ComposeControllerBinding>(),
+    FullComposeContentController {
+
+    override fun createBinding(inflater: LayoutInflater) =
+        ComposeControllerBinding.inflate(inflater)
+
+    override fun onViewCreated(view: View) {
+        super.onViewCreated(view)
+
+        binding.root.apply {
+            setComposeContent {
+                ComposeContent()
+            }
+        }
+    }
+}
+
 abstract class SearchableComposeController<P : BasePresenter<*>>(bundle: Bundle? = null) :
     SearchableNucleusController<ComposeControllerBinding, P>(bundle),
     ComposeContentController {