Re-order error classification for MySQLExecuteError

[jgao54]

We can get MySQLGeometryParseError wrapped inside MySQLExecuteError:

[qrep] failed to pull records: MySQL execute error: could not convert mysql value for Points: failed to parse MySQL geometry WKB: IllegalArgumentException: Points of LinearRing do not form a closed linestring

Reorder the classification logic so MySQLExecuteError functions more like a catch-all before other more specific mysql errors.

[claude]

Code review

No issues found. Checked for bugs and CLAUDE.md compliance.