### Description

`FROM test | eval x1 = pow(emp_no, 1), x2 = pow(x1, 1), x3 = pow(x2, 2)`

or

`FROM test | eval x1 = substring(ip1, 3), x2 = substring(x1, 2), x3 = substring(x2, 2)`

or

`FROM test | eval x1 = concat(ip1, ip2), x2 = concat(x1, "--"), x3 = concat(x2, "**")`

will fail with 

```
                "type": "verification_exception",
                "reason": "Found 1 problem\nline 1:65: Unknown column [x2], did you mean [x1]?"
```

Spawned from https://github.com/elastic/elasticsearch/issues/99472
x-pack/plugin/esql/src/test/java/org/elasticsearch/xpack/esql/analysis/AnalyzerTests.java
}
    /**
     * Here x.y.z.v is of type "keyword" but its parent is of unsupported type "foobar".
     */
    public void testUnsupportedValidFieldTypeInDeepHierarchy() {
        assertProjectionWithMapping("""
            from test
            | keep x.y.z.v
            """, "mapping-multi-field-with-nested.json", "x.y.z.v");
    }
    public void testUnsupportedValidFieldTypeInNestedParentField() {
        verifyUnsupported("""
            from test
            | keep dep.dep_id.keyword
            """, "Found 1 problem\n" + "line 2:8: Unknown column [dep.dep_id.keyword]", "mapping-multi-field-with-nested.json");
    }
    public void testUnsupportedObjectAndNested() {
        verifyUnsupported(
            """
                from test
                | keep dep, some
                """,
            "Found 2 problems\n" + "line 2:8: Unknown column [dep]\n" + "line 2:13: Unknown column [some]",
            "mapping-multi-field-with-nested.json"
        );
    }
    public void testDropNestedField() {
        verifyUnsupported(
            """
                from test