fn json_get_object_path(expr: &Expr) -> Option<Vec<String>>Expand description
Resolves json_get’s second argument expression (the path) to object field names for type hint
lookup. For example, the string literal '$.user.age' resolves to ["user", "age"].
Returns None for non-string literals, non-literal expressions, invalid JSONPaths, or paths
containing array indexes, wildcards, or filters.
Returning None only skips hint injection; the original json_get expression is preserved.