[FEATURE] [ENHANCEMENT] Add `sample_logs` result to `patterns` command aggregation result after Calcite is enabled

[songkant-aws]

Is your feature request related to a problem?
patterns command in V2 engine returns sample_logs field in aggregation result. After Calcite is enabled, the sample_logs is not included in V3 patterns command aggregation result.

User requested this field as a backward compatible feature enhancement.

What solution would you like?
Add sampling of original logs in PATTER_PARSER UDF for patterns aggregation mode.

What alternatives have you considered?

Do you have any additional context?

[songkant-aws]

Looking this one