message: adjust room distributor to roomsublist dom structure
  also better classes to apply
diff: @@ -22,15 +22,14 @@ class RoomSizer extends Sizer {
  const isString = typeof size === "string";
  const cl = item.classList;
  if (isString) {
  - item.style.flex = null;
  - if (size === "show-content") {
  - cl.add("show-content");
  - cl.remove("show-available");
  + if (size === "resized-all") {
  + cl.add("resized-all");
  + cl.remove("resized-sized");
  item.style.maxHeight = null;
  }
  } else {
  - cl.add("show-available");
  - //item.style.flex = `0 1 ${Math.round(size)}px`;
  + cl.add("resized-sized");
  + cl.remove("resized-all");
  item.style.maxHeight = `${Math.round(size)}px`;
  }
  }
  @@ -39,9 +38,10 @@ class RoomSizer extends Sizer {
  class RoomDistributor extends FixedDistributor {
  resize(offset) {
  const itemSize = offset - this.sizer.getItemOffset(this.item);
  -
  - if (itemSize > this.item.scrollHeight) {
  - this.sizer.setItemSize(this.item, "show-content");
  + const scrollItem = this.item.querySelector(".mx_RoomSubList_scroll");
  + const fixedHeight = this.item.offsetHeight - scrollItem.offsetHeight;
  + if (itemSize > (fixedHeight + scrollItem.scrollHeight)) {
  + this.sizer.setItemSize(this.item, "resized-all");
  } else {
  this.sizer.setItemSize(this.item, itemSize);
  }
  