fix search pull-to-refresh (#4915)

Before this, refreshing the status search would show the loading spinner
but not actually do something (account and hashtag search worked fine).

app/src/main/java/com/keylesspalace/tusky/components/search/SearchViewModel.kt

@@ -60,9 +60,9 @@ class SearchViewModel @Inject constructor(
     val activeAccount: AccountEntity?
         get() = accountManager.activeAccount
 
-    val mediaPreviewEnabled = activeAccount?.mediaPreviewEnabled ?: false
-    val alwaysShowSensitiveMedia = activeAccount?.alwaysShowSensitiveMedia ?: false
-    val alwaysOpenSpoiler = activeAccount?.alwaysOpenSpoiler ?: false
+    val mediaPreviewEnabled = activeAccount?.mediaPreviewEnabled == true
+    val alwaysShowSensitiveMedia = activeAccount?.alwaysShowSensitiveMedia == true
+    val alwaysOpenSpoiler = activeAccount?.alwaysOpenSpoiler == true
 
     private val loadedStatuses: MutableList<StatusViewData.Concrete> = mutableListOf()
 
@@ -131,6 +131,10 @@ class SearchViewModel @Inject constructor(
         }
     }
 
+    fun clearStatusCache() {
+        loadedStatuses.clear()
+    }
+
     fun expandedChange(statusViewData: StatusViewData.Concrete, expanded: Boolean) {
         updateStatusViewData(statusViewData.copy(isExpanded = expanded))
     }

app/src/main/java/com/keylesspalace/tusky/components/search/fragments/SearchStatusesFragment.kt

@@ -147,6 +147,11 @@ class SearchStatusesFragment : SearchFragment<StatusViewData.Concrete>(), Status
         return adapter
     }
 
+    override fun onRefresh() {
+        viewModel.clearStatusCache()
+        super.onRefresh()
+    }
+
     override fun onContentHiddenChange(isShowing: Boolean, position: Int) {
         adapter?.peek(position)?.let {
             viewModel.contentHiddenChange(it, isShowing)