Fix scroll sticking when scrollbars are not visible

egui used to completely skip the stick calculation when the
scrollbars were not visible, which is incorrect.

crates/egui/src/containers/scroll_area.rs

@@ -736,6 +736,11 @@ impl Prepared {
         }
 
         for d in 0..2 {
+            // maybe force increase in offset to keep scroll stuck to end position
+            if stick_to_end[d] && state.scroll_stuck_to_end[d] {
+                state.offset[d] = content_size[d] - inner_rect.size()[d];
+            }
+
             let animation_t = current_bar_use[1 - d] / max_scroll_bar_width;
 
             if animation_t == 0.0 {
@@ -777,11 +782,6 @@ impl Prepared {
                 )
             };
 
-            // maybe force increase in offset to keep scroll stuck to end position
-            if stick_to_end[d] && state.scroll_stuck_to_end[d] {
-                state.offset[d] = content_size[d] - inner_rect.size()[d];
-            }
-
             let from_content =
                 |content| remap_clamp(content, 0.0..=content_size[d], min_main..=max_main);