fix direct and any reverse dependencies of default preferences

Modify-default-preferences.patch relies on add-browser-policy.patch to
enact default options set to false, otherwise they'd be toothless.

A second order effect is reverse dependencies from add-browser-policy.patch
itself, thus adding Keep-Side-Panel-Companion-disabled.patch.

One pitfall of cromites patch method is: they aren't sliced per-feature,
dependencies aren't obvious.

issue was found as SafeBrowsing is in a broken state,
closes e/backlog#8921