[TASK] Remove 'index_stat_search_id' field in 'index_stat_word' table

With #92993 the table 'index_stat_search' was removed. The related
field 'index_stat_search_id' in table 'index_stat_word' is left as
an orphaned remnant. This patch now removes the field.

Resolves: #103649
Related: #92993
Releases: main
Change-Id: Idc04a6675c6b75fefd13149cd68a93a2cca3123d
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/83847


Reviewed-by: Garvin Hicking <gh@faktor-e.de>
Tested-by: Jasmina Ließmann <minapokhalo+typo3@gmail.com>
Reviewed-by: Jasmina Ließmann <minapokhalo+typo3@gmail.com>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Garvin Hicking <gh@faktor-e.de>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>