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/dap_adapters/src/python.rs

@@ -46,7 +46,7 @@ impl PythonDebugAdapter {
                 "Using user-installed debugpy adapter from: {}",
                 user_installed_path.display()
             );
-            vec![user_installed_path.to_string_lossy().to_string()]
+            vec![user_installed_path.to_string_lossy().into_owned()]
         } else {
             let adapter_path = paths::debug_adapters_dir().join(Self::DEBUG_ADAPTER_NAME.as_ref());
             let path = adapter_path
@@ -264,7 +264,7 @@ impl PythonDebugAdapter {
             name = delegate
                 .which(OsStr::new(cmd))
                 .await
-                .map(|path| path.to_string_lossy().to_string());
+                .map(|path| path.to_string_lossy().into_owned());
             if name.is_some() {
                 break;
             }