Dequalify WindowContext and ViewContext references (#22477)

Release Notes:

- N/A

crates/welcome/src/base_keymap_picker.rs

@@ -194,7 +194,7 @@ impl PickerDelegate for BaseKeymapSelectorDelegate {
         &self,
         ix: usize,
         selected: bool,
-        _cx: &mut gpui::ViewContext<Picker<Self>>,
+        _cx: &mut ViewContext<Picker<Self>>,
     ) -> Option<Self::ListItem> {
         let keymap_match = &self.matches[ix];
 

crates/welcome/src/welcome.rs

@@ -69,7 +69,7 @@ pub struct WelcomePage {
 }
 
 impl Render for WelcomePage {
-    fn render(&mut self, cx: &mut gpui::ViewContext<Self>) -> impl IntoElement {
+    fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
         h_flex()
             .size_full()
             .bg(cx.theme().colors().editor_background)