Improve few errdetail messages introduced in commit
0d48d393d46.
Based on suggestions by Tom Lane
Reported-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Author: Zhijie Hou <houzj.fnst@fujitsu.com>
Reviewed-by: Amit Kapila <amit.kapila16@gmail.com>
Discussion: https://postgr.es/m/
20250916.114644.
275726106301941878.horikyota.ntt@gmail.com