cli: let clap error out for us on jj restore -i <file>

src/commands.rs

@@ -1284,6 +1284,7 @@ struct RestoreArgs {
     /// Interactively choose which parts to restore
     #[clap(long, short)]
     interactive: bool,
+    #[clap(conflicts_with = "interactive")]
     paths: Vec<String>,
 }
 
@@ -3299,11 +3300,6 @@ fn cmd_restore(
     let repo = workspace_command.repo();
     let tree_id;
     if args.interactive {
-        if !args.paths.is_empty() {
-            return Err(UserError(
-                "restore with --interactive and path is not yet supported".to_string(),
-            ));
-        }
         let instructions = format!(
             "\
 You are restoring state from: {}

tests/test_restore_command.rs

@@ -169,4 +169,16 @@ fn test_restore_interactive() {
     @@ -1,0 +1,1 @@
     +unrelated
     "###);
+
+    // Combining paths with -i is not yet supported
+    std::fs::write(&edit_script, "").unwrap();
+    let stderr = test_env.jj_cmd_failure(&repo_path, &["restore", "-i", "file2"]);
+    insta::assert_snapshot!(stderr.replace("jj.exe", "jj"), @r###"
+    error: The argument '--interactive' cannot be used with '<PATHS>...'
+
+    USAGE:
+        jj restore --interactive
+
+    For more information try --help
+    "###);
 }