Primitives · raise: what opens inside a dialog lies over it

gpui 0.2.2 asserts on a deferred draw inside another, and every dialog,
sheet and popover draws inside one, so opening a date field in the
snooze or schedule dialog panicked, as would any list, menu or picker
opened in an overlay. primitives::raise replaces each deferred draw:
at the top it defers as before; inside something raised it leaves a
placeholder in the tree, and its layer lays it out on its own, then
draws it last. check.sh refuses gpui's deferred anywhere else.

The time dialog's rule is now times::ahead, tested for a moment
behind, now itself, a moment ahead and another zone; a gpui test picks
yesterday in the snooze dialog, sees that it has passed and that
nothing is sent, then picks two days ahead and hears that moment.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/menus/pie.rs

@@ -3,14 +3,14 @@ use std::{f32::consts::TAU, rc::Rc};
 use gpui::{
     Animation, AnimationExt, AnyElement, App, Bounds, ElementId, Entity, FontWeight,
     InteractiveElement, IntoElement, MouseButton, ParentElement, Pixels, Point, RenderOnce,
-    SharedString, Styled, Window, anchored, canvas, deferred, div, point,
+    SharedString, Styled, Window, anchored, canvas, div, point,
 };
 use smallvec::SmallVec;
 
 use crate::{
     forms::{Pick, Run},
     motion,
-    primitives::{Icon, IconName, give_back, take_focus},
+    primitives::{Icon, IconName, give_back, raise, take_focus},
     theme::{ActiveTheme, Elevation, IconSize, TextSize},
 };
 
@@ -302,7 +302,7 @@ impl RenderOnce for PieMenu {
                 }
             });
         region.child(
-            deferred(
+            raise(
                 anchored()
                     .position(point(Pixels::ZERO, Pixels::ZERO))
                     .child(