Deprecation: #62854 - Abstractplugin->pi_list_searchBox()

See forge#62854

Description

Method pi_list_searchBox() of AbstractPlugin (aka pibase) was used with very old search solutions and is hopelessly outdated. It is now discouraged to be used and will be removed with next major version.

Impact

Extensions still using pi_list_searchBox() will throw a deprecation warning.

Affected installations

Any extension still using this method needs to be adapted.