chore: Prepare for Rust edition bump to 2024 (without autofix) (#27791)

Successor to #27779 - in this PR I've applied changes manually, without
futzing with if let lifetimes at all.

Release Notes:

- N/A

crates/git_ui/src/git_panel.rs

@@ -1548,7 +1548,7 @@ impl GitPanel {
         &mut self,
         window: &mut Window,
         cx: &mut Context<Self>,
-    ) -> impl Future<Output = Result<bool, anyhow::Error>> {
+    ) -> impl Future<Output = Result<bool, anyhow::Error>> + use<> {
         let repo = self.active_repository.clone();
         let mut cx = window.to_async(cx);
 
@@ -2007,7 +2007,7 @@ impl GitPanel {
         &mut self,
         window: &mut Window,
         cx: &mut Context<Self>,
-    ) -> impl Future<Output = anyhow::Result<Option<Remote>>> {
+    ) -> impl Future<Output = anyhow::Result<Option<Remote>>> + use<> {
         let repo = self.active_repository.clone();
         let workspace = self.workspace.clone();
         let mut cx = window.to_async(cx);