Open any form in a Base file. Click on a field. Navigation bar will be shown at the bottom. There will be 4 Filter symbols: AutoFilter, ApplyFilter, Form-BasedFilters and ResetFiter/Sort. StandardFilter won't be available here. Press Data Source as Table. StandardFilter is available. Same with a navigationbar, which is create as a form control. There is no possibility to add these filter to the navigation bar, because it isn't available through customize - toolbars.
Repro Arch Linux 64-bit, X11 Version: 7.5.0.3 (X86_64) / LibreOffice Community Build ID: 50(Build:3) CPU threads: 8; OS: Linux 6.1; UI render: default; VCL: kf5 (cairo+xcb) Locale: fi-FI (fi_FI.UTF-8); UI: en-US 7.5.0-1 Calc: threaded