Replace full with size_full (#7888)

This PR removes the `full` style method and replaces it with
`size_full`, as the two do the same thing.

This is the generated code for `size_full`:

```rs
#[doc = "Sets the width and height of the element.\n\n100%"]
fn size_full(mut self) -> Self {
    let style = self.style();
    style.size.width = Some((gpui::relative(1.)).into());
    style.size.height = Some((gpui::relative(1.)).into());
    self
}
```

Release Notes:

- N/A

crates/collab_ui/src/chat_panel.rs

@@ -733,7 +733,7 @@ impl Render for ChatPanel {
         v_flex()
             .key_context("ChatPanel")
             .track_focus(&self.focus_handle)
-            .full()
+            .size_full()
             .on_action(cx.listener(Self::send))
             .child(
                 h_flex().z_index(1).child(
@@ -755,11 +755,11 @@ impl Render for ChatPanel {
             )
             .child(div().flex_grow().px_2().map(|this| {
                 if self.active_chat.is_some() {
-                    this.child(list(self.message_list.clone()).full())
+                    this.child(list(self.message_list.clone()).size_full())
                 } else {
                     this.child(
                         div()
-                            .full()
+                            .size_full()
                             .p_4()
                             .child(
                                 Label::new("Select a channel to chat in.")

crates/collab_ui/src/collab_panel.rs

@@ -2036,7 +2036,7 @@ impl CollabPanel {
     fn render_signed_in(&mut self, cx: &mut ViewContext<Self>) -> Div {
         v_flex()
             .size_full()
-            .child(list(self.list_state.clone()).full())
+            .child(list(self.list_state.clone()).size_full())
             .child(
                 v_flex()
                     .child(div().mx_2().border_primary(cx).border_t())