Dolt returns a wrong result for REGEXP_LIKE across partitions

[Yibo-Dong]

What happened

For a legal partitioned aggregate window, Dolt evaluates the disposable REGEXP_LIKE child correctly in the first partition but returns 0 for the same true predicate in the next partition.

Environment

Dolt main (commit c3b5ce3c67f8677ca08a0a58d8c03cdc95bff8b7). MySQL version 8.0.43.

How to reproduce

Run the corresponding SQL in a fresh Dolt repository.

CREATE TABLE t(
  g INT PRIMARY KEY,
  v INT NOT NULL,
  s VARCHAR(8) NOT NULL
);
INSERT INTO t VALUES (0,10,'a'),(1,50,'a');

SELECT g,
       SUM(CASE WHEN REGEXP_LIKE(s,'a') THEN v ELSE 0 END)
         OVER (PARTITION BY g) AS total
FROM t
ORDER BY g;

Expected Result

MySQL 8.0.43's REGEXP_LIKE(expr, pat) returns 1 when expr matches pat,
and a window result is computed independently for the partition containing
each row. The independent exact-INT expected result is:

g  total
0  10
1  50

This uses no ORDER BY, so the legal default frame is the full partition.
The same expectation follows directly from the two one-row partitions and REGEXP_LIKE('a','a') = 1.

Dolt actual

Dolt returned:

g  total
0  10
1  0