Fix test failure when running tests with nextest (#13101)

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Test was failing with “did you mean” due to the `NEXTEST` env var being
present when running tests via `cargo nextest run`.

# User-Facing Changes
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tests/shell/environment/env.rs

@@ -132,7 +132,7 @@ fn hides_environment_from_child() {
         $env.TEST = 1; ^$nu.current-exe -c "hide-env TEST; ^$nu.current-exe -c '$env.TEST'"
     "#);
     assert!(actual.out.is_empty());
-    assert!(actual.err.contains("cannot find column"));
+    assert!(actual.err.contains("column_not_found") || actual.err.contains("name_not_found"));
 }
 
 #[test]