Clear search toolbar upon opening.

app/src/main/java/org/thoughtcrime/securesms/components/Material3SearchToolbar.kt

@@ -80,6 +80,10 @@ class Material3SearchToolbar @JvmOverloads constructor(
     }
   }
 
+  fun clearText() {
+    input.setText("");
+  }
+
   interface Listener {
     fun onSearchTextChange(text: String)
     fun onSearchClosed()

app/src/main/java/org/thoughtcrime/securesms/main/MainActivityListHostFragment.kt

@@ -212,6 +212,7 @@ class MainActivityListHostFragment : Fragment(R.layout.main_activity_list_host_f
 
   override fun onSearchOpened() {
     conversationListTabsViewModel.onSearchOpened()
+    _searchToolbar.get().clearText();
   }
 
   override fun onSearchClosed() {