Dequalify WindowContext and AsyncWindowContext identifiers (#22444)

This makes a WIP automated refactoring a bit easier to write

Release Notes:

- N/A

crates/context_server/Cargo.toml

@@ -28,7 +28,6 @@ serde.workspace = true
 serde_json.workspace = true
 settings.workspace = true
 smol.workspace = true
-ui.workspace = true
 url = { workspace = true, features = ["serde"] }
 util.workspace = true
 workspace.workspace = true

crates/context_server/src/context_server_tool.rs

@@ -2,7 +2,7 @@ use std::sync::Arc;
 
 use anyhow::{anyhow, bail};
 use assistant_tool::Tool;
-use gpui::{Model, Task};
+use gpui::{Model, Task, WindowContext};
 
 use crate::manager::ContextServerManager;
 use crate::types;
@@ -52,7 +52,7 @@ impl Tool for ContextServerTool {
         self: std::sync::Arc<Self>,
         input: serde_json::Value,
         _workspace: gpui::WeakView<workspace::Workspace>,
-        cx: &mut ui::WindowContext,
+        cx: &mut WindowContext,
     ) -> gpui::Task<gpui::Result<String>> {
         if let Some(server) = self.server_manager.read(cx).get_server(&self.server_id) {
             cx.foreground_executor().spawn({