gpui: Implement From<String> for ElementId (#44447)

Release Notes:

- N/A

## Before

```rs
div()
    .id(SharedString::from(format!("process-entry-{ix}-command")))
```

## After

```rs
div()
    .id(format!("process-entry-{ix}-command"))
```

crates/debugger_ui/src/attach_modal.rs

@@ -317,7 +317,7 @@ impl PickerDelegate for AttachModalDelegate {
         let candidate = self.candidates.get(hit.candidate_id)?;
 
         Some(
-            ListItem::new(SharedString::from(format!("process-entry-{ix}")))
+            ListItem::new(format!("process-entry-{ix}"))
                 .inset(true)
                 .spacing(ListItemSpacing::Sparse)
                 .toggle_state(selected)
@@ -327,7 +327,7 @@ impl PickerDelegate for AttachModalDelegate {
                         .child(Label::new(format!("{} {}", candidate.name, candidate.pid)))
                         .child(
                             div()
-                                .id(SharedString::from(format!("process-entry-{ix}-command")))
+                                .id(format!("process-entry-{ix}-command"))
                                 .tooltip(Tooltip::text(
                                     candidate
                                         .command

crates/debugger_ui/src/new_process_modal.rs

@@ -1519,7 +1519,7 @@ impl PickerDelegate for DebugDelegate {
         });
 
         Some(
-            ListItem::new(SharedString::from(format!("debug-scenario-selection-{ix}")))
+            ListItem::new(format!("debug-scenario-selection-{ix}"))
                 .inset(true)
                 .start_slot::<IconWithIndicator>(icon)
                 .spacing(ListItemSpacing::Sparse)

crates/debugger_ui/src/session/running.rs

@@ -286,10 +286,10 @@ impl Item for SubView {
 impl Render for SubView {
     fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
         v_flex()
-            .id(SharedString::from(format!(
+            .id(format!(
                 "subview-container-{}",
                 self.kind.to_shared_string()
-            )))
+            ))
             .on_hover(cx.listener(|this, hovered, _, cx| {
                 this.hovered = *hovered;
                 cx.notify();
@@ -484,10 +484,7 @@ pub(crate) fn new_debugger_pane(
                                 let deemphasized = !pane.has_focus(window, cx);
                                 let item_ = item.boxed_clone();
                                 div()
-                                    .id(SharedString::from(format!(
-                                        "debugger_tab_{}",
-                                        item.item_id().as_u64()
-                                    )))
+                                    .id(format!("debugger_tab_{}", item.item_id().as_u64()))
                                     .p_1()
                                     .rounded_md()
                                     .cursor_pointer()