Always wait for completion resolve before applying the completion edits (#18907)

After https://github.com/rust-lang/rust-analyzer/pull/18167 and certain
people who type and complete rapidly, it turned out that we have not
waited for `completionItem/resolve` to finish before applying the
completion results.

Release Notes:

- Fixed completion items applied improperly on fast typing

crates/vim/src/normal/repeat.rs

@@ -387,7 +387,7 @@ mod test {
             lsp::ServerCapabilities {
                 completion_provider: Some(lsp::CompletionOptions {
                     trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
-                    resolve_provider: Some(true),
+                    resolve_provider: Some(false),
                     ..Default::default()
                 }),
                 ..Default::default()
@@ -432,7 +432,9 @@ mod test {
         request.next().await;
         cx.condition(|editor, _| editor.context_menu_visible())
             .await;
-        cx.simulate_keystrokes("down enter ! escape");
+        cx.simulate_keystrokes("down enter");
+        cx.run_until_parked();
+        cx.simulate_keystrokes("! escape");
 
         cx.assert_state(
             indoc! {"