fix: Collect the server capabilities in SFragment subclasses (#252)

Not all subclasses were calling `super.onViewCreated()` so collecting
the server capability wasn't happening consistently. Fix this, and add a
`@CallSuper` annotation to prevent the problem from recurring.

app/src/main/java/app/pachli/components/conversation/ConversationsFragment.kt

@@ -99,6 +99,7 @@ class ConversationsFragment :
     }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
         requireActivity().addMenuProvider(this, viewLifecycleOwner, Lifecycle.State.RESUMED)
 
         viewLifecycleOwner.lifecycleScope.launch {

app/src/main/java/app/pachli/components/timeline/TimelineFragment.kt

@@ -178,6 +178,7 @@ class TimelineFragment :
     }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
         requireActivity().addMenuProvider(this, viewLifecycleOwner, Lifecycle.State.RESUMED)
 
         layoutManager = LinearLayoutManager(context)

app/src/main/java/app/pachli/components/viewthread/ViewThreadFragment.kt

@@ -103,6 +103,7 @@ class ViewThreadFragment :
     }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
         requireActivity().addMenuProvider(this, viewLifecycleOwner, Lifecycle.State.RESUMED)
 
         binding.swipeRefreshLayout.setOnRefreshListener(this)

app/src/main/java/app/pachli/fragment/SFragment.kt

@@ -30,6 +30,7 @@ import android.os.Environment
 import android.view.MenuItem
 import android.view.View
 import android.widget.Toast
+import androidx.annotation.CallSuper
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.widget.PopupMenu
 import androidx.core.app.ActivityOptionsCompat
@@ -109,6 +110,7 @@ abstract class SFragment : Fragment() {
         }
     }
 
+    @CallSuper
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)