Use into_owned over to_string for Cow<str> (#39024)

This removes unnecessary allocations when the `Cow` is already owned


Release Notes:

- N/A *or* Added/Fixed/Improved ...

crates/debugger_ui/src/attach_modal.rs

@@ -373,7 +373,7 @@ fn get_processes_for_project(project: &Entity<Project>, cx: &mut App) -> Task<Ar
                     command: process
                         .cmd()
                         .iter()
-                        .map(|s| s.to_string_lossy().to_string())
+                        .map(|s| s.to_string_lossy().into_owned())
                         .collect::<Vec<_>>(),
                 }
             })

crates/debugger_ui/src/new_process_modal.rs

@@ -1578,7 +1578,7 @@ impl PickerDelegate for DebugDelegate {
 
 pub(crate) fn resolve_path(path: &mut String) {
     if path.starts_with('~') {
-        let home = paths::home_dir().to_string_lossy().to_string();
+        let home = paths::home_dir().to_string_lossy().into_owned();
         let trimmed_path = path.trim().to_owned();
         *path = trimmed_path.replacen('~', &home, 1);
     } else if let Some(strip_path) = path.strip_prefix(&format!(".{}", std::path::MAIN_SEPARATOR)) {

crates/debugger_ui/src/tests/debugger_panel.rs

@@ -351,7 +351,7 @@ async fn test_handle_successful_run_in_terminal_reverse_request(
         .fake_reverse_request::<RunInTerminal>(RunInTerminalRequestArguments {
             kind: None,
             title: None,
-            cwd: std::env::temp_dir().to_string_lossy().to_string(),
+            cwd: std::env::temp_dir().to_string_lossy().into_owned(),
             args: vec![],
             env: None,
             args_can_be_interpreted_by_shell: None,