Enhance sqlite3_vtab_nochange() so that it works with "UPDATE ... FROM ..." statement...

FossilOrigin-Name: 27ff86e4d8d251dbbcc9f0682d3d7b040518cbeee891cfe253661d1fdbec4e4f

diff --cc manifest
index d8d3391f11478ea4783203b55e33ef67ed68ad45,d159c83a4eb05e6c7a7842976fe1b8456e5827eb..ae6a08e6f9328ee46458c58e91395413fda7f7b1
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Rename\sfts5_api\spContext\sparameters\sto\spUserData,\sper\s/chat\sdiscussion.\sThis\sis\sa\scosmetic\schange\smade\sto\sreduce\sconfusion\sbetween\sthose\sparameters\sand\sthe\stwo\sother\scontext-type\sparameters\sin\sthat\sAPI.
- D 2023-08-07T09:44:00.281
 -C Changes\sso\sthat\ssqlite3_vtab_nochange()\sworks\swith\s"UPDATE\s...\sFROM...".\sUse\sthis\sto\sallow\sUPDATE\son\sa\scontentless\sfts5\stable\sif\snew\svalues\sare\ssupplied\sfor\sall\sindexed\scolumns.
 -D 2023-08-07T16:15:56.046
++C Enhance\ssqlite3_vtab_nochange()\sso\sthat\sit\sworks\swith\s"UPDATE\s...\sFROM\s..."\sstatements.\sUse\sthis\sto\sallow\ssome\supdates\son\sfts5\scontentless-delete\stables.
++D 2023-08-07T17:09:25.480
  F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
  F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
  F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@@ -2049,8 -2050,11 +2050,9 @@@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a9
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
- P 8ede50082e7bcf0226a3b42a590f188b5a139bbf081c9eed7ff8f6f2a6a274a0
- R 7643277fee9d7d8c9b719b0a83935d9f
- U stephan
- Z 84e0aac57037c35f1739965aedd50f66
 -P 2ca064d8eb37252e16b0fec9924e9ba9289d96a737346431c6ba9cb1c161e5de
++P 2ca064d8eb37252e16b0fec9924e9ba9289d96a737346431c6ba9cb1c161e5de 16cd2161e312cf97129011fc829079db8f762b822b2f4fabf7ff6742c071302f
+ R cb2871ec0eb1a937adec492d1c792b96
 -T *branch * fts5-contentless-delete
 -T *sym-fts5-contentless-delete *
 -T -sym-trunk *
++T +closed 16cd2161e312cf97129011fc829079db8f762b822b2f4fabf7ff6742c071302f
+ U dan
 -Z b30ed14be16970913bfed643626fe629
++Z 636193e34abfece337b10699da0a61ae
  # Remove this line to create a well-formed Fossil manifest.

diff --cc manifest.uuid
index 86338d27274c44848d9bf6dcb79a917b35074c0a,ea2017dc469c2787ba29a8127b5c230343328c3b..fc3de33234b475b41af52833cf6e88982e88b72e
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- 2ca064d8eb37252e16b0fec9924e9ba9289d96a737346431c6ba9cb1c161e5de
 -16cd2161e312cf97129011fc829079db8f762b822b2f4fabf7ff6742c071302f
++27ff86e4d8d251dbbcc9f0682d3d7b040518cbeee891cfe253661d1fdbec4e4f