Remove usage of use gpui::* (#22310)

This PR removes usages of `use gpui::*;` in the codebase (excluding
examples).

We should only use glob imports for `gpui::prelude`, and then import
everything else individually.

Release Notes:

- N/A

crates/ui/src/components/tool_strip.rs

@@ -1,7 +1,8 @@
 #![allow(missing_docs)]
 
+use gpui::Axis;
+
 use crate::prelude::*;
-use gpui::*;
 
 #[derive(IntoElement)]
 pub struct ToolStrip {