bugs.gh_8601_test. Charset and collation are not found in the search path when altering a table (FB 6.0 SQL schemas)

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Full history of outcomes and elapsed time, ms:
NN SNAP_INFO CS_outcome SS_outcome CS_run_time SS_run_time CS_run_beg CS_run_end SS_run_beg SS_run_end
1 6.0.0.881 2025.06.27 7035d P P 810 419 2025.06.30 02:07:25.653 2025.06.30 02:07:26.463 2025.06.29 23:23:44.518 2025.06.29 23:23:44.937
2 6.0.0.877 2025.06.26 8e38f P P 726 410 2025.06.27 01:46:10.143 2025.06.27 01:46:10.869 2025.06.26 23:14:34.118 2025.06.26 23:14:34.528
3 6.0.0.876 2025.06.25 b1bec P P 701 576 2025.06.26 01:50:02.165 2025.06.26 01:50:02.866 2025.06.25 23:16:19.486 2025.06.25 23:16:20.062
4 6.0.0.863 2025.06.24 c3c20 P P 740 328 2025.06.25 01:50:21.362 2025.06.25 01:50:22.102 2025.06.24 23:16:06.966 2025.06.24 23:16:07.294
5 6.0.0.858 2025.06.23 8d6f7 P P 751 557 2025.06.24 01:50:42.964 2025.06.24 01:50:43.715 2025.06.23 23:16:12.183 2025.06.23 23:16:12.740
6 6.0.0.849 2025.06.20 7b79c P P 804 352 2025.06.21 02:02:15.519 2025.06.21 02:02:16.323 2025.06.20 23:25:06.169 2025.06.20 23:25:06.521
7 6.0.0.848 2025.06.19 c483c P P 754 322 2025.06.20 01:58:37.672 2025.06.20 01:58:38.426 2025.06.19 23:22:08.919 2025.06.19 23:22:09.241
8 6.0.0.845 2025.06.18 22b12 P P 735 668 2025.06.19 02:07:16.018 2025.06.19 02:07:16.753 2025.06.18 23:25:34.598 2025.06.18 23:25:35.266
9 6.0.0.843 2025.06.16 995f4 P P 789 732 2025.06.18 02:05:32.335 2025.06.18 02:05:33.124 2025.06.17 23:27:03.020 2025.06.17 23:27:03.752
10 6.0.0.840 2025.06.14 29bca P P 693 428 2025.06.16 01:57:23.694 2025.06.16 01:57:24.387 2025.06.15 23:19:39.991 2025.06.15 23:19:40.419

Elapsed time, ms. Chart for last 10 runs:

Last commits information (all timestamps in UTC):