`get_json_object` doesn't support field name which with number begin

[lgbo-ustc]

(you don't have to strictly follow this form)

Use case

The following query could run in spark, but fail in gluten.

select get_json_object(eventinfo,"$.2958_channel_rec_flag_a") from t;

Because the json path parser in ClickHouse don't support field name begin with number.

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