weston-ini-config: Fix gRPC missing in other images

Flutter images in particular were affected because we only added the
gRPC proxy in just the no-activate case.

Change-Id: I32ee2ef739147e6cee3063004b98611ea7fd8198
Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
Suggested-by: Scott Murray <scott.murray@konsulko.com>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl/+/29017
Tested-by: Jenkins Job builder account
ci-image-build: Jenkins Job builder account
ci-image-boot-test: Jenkins Job builder account
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>