fixes, cleanup, now properly renders ancestors etc

src/composables/useTreeConversationTopology.js

@@ -81,7 +81,7 @@ export function useTreeConversationTopology(conversation, replies, current) {
   })
   const threadDisplay = computed(() => {
     return new Map(
-      [...threadDisplayOverride.value.entries()].map(([k, v]) => [
+      [...threadDisplayDefault.value.entries()].map(([k, v]) => [
         k,
         threadDisplayOverride.value.get(k) ?? threadDisplayDefault.value.get(k),
       ]),

src/composables/useVirtualScrolling.js

@@ -1,5 +1,5 @@
 import { storeToRefs } from 'pinia'
-import { computed, onMounted, ref, watch } from 'vue'
+import { computed, ref, watch } from 'vue'
 
 import { useMergedConfigStore } from 'src/stores/merged_config.js'
 import { useStatusesStore } from 'src/stores/statuses.js'
@@ -82,7 +82,7 @@ export function useVirtualScrolling(conversation, body) {
   watch(windowHeight, updateBoundaries)
   watch(scrollY, updateBoundaries)
   watch(totalHeight, updateBoundaries)
-  onMounted(updateBoundaries)
+  watch(body, updateBoundaries)
 
   const heightChart = computed(() => {
     // Map every height and suspendable state