chore: Revert changes made to ui crate structure (#17516)

As a part of https://github.com/zed-industries/zed/pull/17488 I
flattened module structure of ui crate to fix module_inception lint.
However, that's actually unnecessary as we can pass that lint via a
custom knob for clippy.

Closes #ISSUE

Release Notes:

- N/A

crates/ui/src/components/list.rs

@@ -1,76 +1,11 @@
+mod list;
 mod list_header;
 mod list_item;
 mod list_separator;
 mod list_sub_header;
 
+pub use list::*;
 pub use list_header::*;
 pub use list_item::*;
 pub use list_separator::*;
 pub use list_sub_header::*;
-
-use gpui::AnyElement;
-use smallvec::SmallVec;
-
-use crate::{prelude::*, v_flex, Label};
-
-pub use ListHeader;
-
-#[derive(IntoElement)]
-pub struct List {
-    /// Message to display when the list is empty
-    /// Defaults to "No items"
-    empty_message: SharedString,
-    header: Option<ListHeader>,
-    toggle: Option<bool>,
-    children: SmallVec<[AnyElement; 2]>,
-}
-
-impl Default for List {
-    fn default() -> Self {
-        Self::new()
-    }
-}
-
-impl List {
-    pub fn new() -> Self {
-        Self {
-            empty_message: "No items".into(),
-            header: None,
-            toggle: None,
-            children: SmallVec::new(),
-        }
-    }
-
-    pub fn empty_message(mut self, empty_message: impl Into<SharedString>) -> Self {
-        self.empty_message = empty_message.into();
-        self
-    }
-
-    pub fn header(mut self, header: impl Into<Option<ListHeader>>) -> Self {
-        self.header = header.into();
-        self
-    }
-
-    pub fn toggle(mut self, toggle: impl Into<Option<bool>>) -> Self {
-        self.toggle = toggle.into();
-        self
-    }
-}
-
-impl ParentElement for List {
-    fn extend(&mut self, elements: impl IntoIterator<Item = AnyElement>) {
-        self.children.extend(elements)
-    }
-}
-
-impl RenderOnce for List {
-    fn render(self, _cx: &mut WindowContext) -> impl IntoElement {
-        v_flex().w_full().py_1().children(self.header).map(|this| {
-            match (self.children.is_empty(), self.toggle) {
-                (false, _) => this.children(self.children),
-                (true, Some(false)) => this,
-                (true, _) => this.child(Label::new(self.empty_message.clone()).color(Color::Muted)),
-            }
-        })
-    }
-}