lsp: Revert URL type change (#13193)

This reverts URI changes made in
https://github.com/zed-industries/zed/pull/12928 while keeping the perf
goodies in tact. We should keep an eye out for
https://github.com/gluon-lang/lsp-types/issues/284
Fixes: https://github.com/zed-industries/zed/issues/13135
Fixes: https://github.com/zed-industries/zed/issues/13131
Release Notes:

- N/A

crates/languages/src/rust.rs

@@ -533,7 +533,7 @@ mod tests {
     #[gpui::test]
     async fn test_process_rust_diagnostics() {
         let mut params = lsp::PublishDiagnosticsParams {
-            uri: lsp::Uri::from_file_path("/a").unwrap().into(),
+            uri: lsp::Url::from_file_path("/a").unwrap(),
             version: None,
             diagnostics: vec![
                 // no newlines