bugs.gh_7094_test. Incorrect indexed lookup of strings when the last keys characters are part of collated contractions and there is multi-segment insensitive descending index

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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 4.0.6.3189 2025.02.25 1a1a5 P P 661 451 2025.06.26 14:45:24.924 2025.06.26 14:45:25.585 2025.06.26 13:36:26.633 2025.06.26 13:36:27.084
2 4.0.6.3184 2025.02.24 9388c P P 12069 9229 2025.02.25 13:45:33.890 2025.02.25 13:45:45.959 2025.02.25 12:26:52.269 2025.02.25 12:27:01.498
3 4.0.6.3183 2025.02.16 cf6ca P P 12035 9159 2025.02.17 07:39:46.241 2025.02.17 07:39:58.276 2025.02.17 06:20:28.546 2025.02.17 06:20:37.705
4 4.0.6.3169 2024.12.13 42cc1 P P 11956 8951 2025.02.16 04:36:59.562 2025.02.16 04:37:11.518 2025.02.16 03:19:48.686 2025.02.16 03:19:57.637
5 4.0.6.3169 2024.12.08 50eb6 P P 9736 7731 2024.12.12 18:54:42.525 2024.12.12 18:54:52.261 2024.12.12 17:52:57.720 2024.12.12 17:53:05.451
6 4.0.6.3168 2024.11.28 48149 P P 9578 7680 2024.12.06 03:15:43.879 2024.12.06 03:15:53.457 2024.12.06 02:15:34.661 2024.12.06 02:15:42.341
7 4.0.6.3163 2024.10.16 2bb10 P P 9763 7826 2024.11.27 13:40:16.723 2024.11.27 13:40:26.486 2024.11.27 10:39:11.521 2024.11.27 10:39:19.347
8 4.0.6.3163 2024.10.15 f387e P P 9739 7882 2024.10.16 04:45:42.336 2024.10.16 04:45:52.075 2024.10.16 03:48:33.147 2024.10.16 03:48:41.029
9 4.0.6.3147 2024.08.31 4655b P P 10088 7709 2024.09.30 12:01:38.588 2024.09.30 12:01:48.676 2024.09.30 10:57:48.405 2024.09.30 10:57:56.114
10 4.0.6.3140 2024.08.16 1dd8b P P 18130 11253 2024.08.31 18:31:08.709 2024.08.31 18:31:26.839 2024.08.31 16:36:29.114 2024.08.31 16:36:40.367
11 4.0.6.3140 2024.08.09 34747 P P 11370 8910 2024.08.16 11:06:12.243 2024.08.16 11:06:23.613 2024.08.16 09:56:44.911 2024.08.16 09:56:53.821
12 4.0.5.3110 2024.07.30 c6527 P P 14052 8904 2024.08.09 10:57:09.096 2024.08.09 10:57:23.148 2024.08.09 09:47:58.764 2024.08.09 09:48:07.668
13 4.0.5.3109 2024.06.11 6addf P P 11536 8770 2024.07.30 09:16:05.357 2024.07.30 09:16:16.893 2024.07.30 08:15:25.486 2024.07.30 08:15:34.256
14 4.0.5.3097 2024.05.09 27fa6 P P 9959 7484 2024.05.14 10:01:02.111 2024.05.14 10:01:12.070 2024.05.14 08:59:05.923 2024.05.14 08:59:13.407
15 4.0.5.3091 2024.04.29 bd0aa P P 9965 7721 2024.05.08 21:02:50.703 2024.05.08 21:03:00.668 2024.05.08 20:09:50.700 2024.05.08 20:09:58.421
16 4.0.5.3089 2024.04.25 4b9c7 P P 9882 7665 2024.04.27 15:47:22.074 2024.04.27 15:47:31.956 2024.04.27 14:53:39.351 2024.04.27 14:53:47.016

Elapsed time, ms. Chart for last 16 runs:

Last commits information (all timestamps in UTC):