gpui: Rework overlay element (#9911)

There was a problem using deferred draws with `overlay` and tooltips at
the same time.

The `overlay` element was removed and was split up into two separate
elements
- `deferred`
- `anchored` - Mimics the `overlay` behavior but does not render its
children as deferred

`tooltip_container` does not defer its drawing anymore and only uses
`anchored`.

/cc @as-cii 


Release Notes:
- Fixed tooltip for the recent projects popover not showing anymore

---------

Co-authored-by: Antonio <antonio@zed.dev>

crates/terminal_view/src/terminal_view.rs

@@ -6,9 +6,9 @@ use collections::HashSet;
 use editor::{scroll::Autoscroll, Editor};
 use futures::{stream::FuturesUnordered, StreamExt};
 use gpui::{
-    div, impl_actions, overlay, AnyElement, AppContext, DismissEvent, EventEmitter, FocusHandle,
-    FocusableView, KeyContext, KeyDownEvent, Keystroke, Model, MouseButton, MouseDownEvent, Pixels,
-    Render, Styled, Subscription, Task, View, VisualContext, WeakView,
+    anchored, deferred, div, impl_actions, AnyElement, AppContext, DismissEvent, EventEmitter,
+    FocusHandle, FocusableView, KeyContext, KeyDownEvent, Keystroke, Model, MouseButton,
+    MouseDownEvent, Pixels, Render, Styled, Subscription, Task, View, VisualContext, WeakView,
 };
 use language::Bias;
 use persistence::TERMINAL_DB;
@@ -765,10 +765,12 @@ impl Render for TerminalView {
                 )),
             )
             .children(self.context_menu.as_ref().map(|(menu, position, _)| {
-                overlay()
-                    .position(*position)
-                    .anchor(gpui::AnchorCorner::TopLeft)
-                    .child(menu.clone())
+                deferred(
+                    anchored()
+                        .position(*position)
+                        .anchor(gpui::AnchorCorner::TopLeft)
+                        .child(menu.clone()),
+                )
             }))
     }
 }