Prevent internal-use-only SQL functions from being used inside of a CHECK

constraint added using ALTER TABLE ADD CONSTRAINT.
[forum:/forumpost/6256ee34ed|Forum post 6256ee34ed].

FossilOrigin-Name: 07beb966daddd0dfea36265eb38ebfcfbb10b0cbccda458dea501eda330a49f0

diff --cc manifest
index 7cfd623c6c325f97074e5f979f63151ede635bc7,bce66868157fd95927ea79f94fe4f4357061224b..9e7ba56db32c5eff9b90d813f5d8d28ea65534da
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Improve\sdetection\sof\scorrupt\sdatabase\srecords\sin\sfts5.
- D 2026-05-11T11:53:07.269
 -C Fix\scomment\stypos.\s\sAdd\stest\scases.
 -D 2026-05-11T14:14:25.417
++C Prevent\sinternal-use-only\sSQL\sfunctions\sfrom\sbeing\sused\sinside\sof\sa\sCHECK\nconstraint\sadded\susing\sALTER\sTABLE\sADD\sCONSTRAINT.\n[forum:/forumpost/6256ee34ed|Forum\spost\s6256ee34ed].
++D 2026-05-11T14:22:45.851
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  # Remove this line to create a well-formed Fossil manifest.

diff --cc manifest.uuid
index 26d8911f631a21640502ceee27485c4eab1baeba,c9b498dee32b3960078f739e7436bbdf1311f645..c94bd2c33eb90284a76d2ea12a1fc1ec1ba1ab08
--- 1/manifest.uuid
--- 2/manifest.uuid
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