Fix access to columns with quoted names (#1662)

crates/nu-cli/tests/commands/get.rs

@@ -235,3 +235,13 @@ fn errors_fetching_by_index_out_of_bounds() {
         )
     })
 }
+
+#[test]
+fn quoted_column_access() {
+    let actual = nu!(
+        cwd: "tests/fixtures/formats",
+        r#"echo '[{"foo bar": {"baz": 4}}]' | from-json | get "foo bar".baz | echo $it"#
+    );
+
+    assert_eq!(actual, "4");
+}