For #14543 - Prevents IllegalStateException by not moving to another thread

app/src/main/java/org/mozilla/fenix/settings/deletebrowsingdata/DeleteBrowsingDataFragment.kt

@@ -15,11 +15,14 @@ import kotlinx.android.synthetic.main.fragment_delete_browsing_data.*
 import kotlinx.android.synthetic.main.fragment_delete_browsing_data.view.*
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Dispatchers.IO
+import kotlinx.coroutines.Dispatchers.Main
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.cancel
 import kotlinx.coroutines.flow.collect
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 import mozilla.components.lib.state.ext.flowScoped
 import mozilla.components.support.ktx.kotlinx.coroutines.flow.ifChanged
 import org.mozilla.fenix.R
@@ -139,7 +142,7 @@ class DeleteBrowsingDataFragment : Fragment(R.layout.fragment_delete_browsing_da
 
     private fun deleteSelected() {
         startDeletion()
-        viewLifecycleOwner.lifecycleScope.launch(Dispatchers.IO) {
+        viewLifecycleOwner.lifecycleScope.launch(IO) {
             getCheckboxes().mapIndexed { i, v ->
                 if (v.isChecked) {
                     when (i) {
@@ -152,7 +155,7 @@ class DeleteBrowsingDataFragment : Fragment(R.layout.fragment_delete_browsing_da
                 }
             }
 
-            launch(Dispatchers.Main) {
+            withContext(Main) {
                 finishDeletion()
                 requireComponents.analytics.metrics.track(Event.ClearedPrivateData)
             }