luci-base: dispatcher.uc: apply ACLs to menu tree JSON

Add menu tree annotations for node readonly and dependency satisfied state
in order to ensure that unreachable menu nodes are hidden from view.

Fixes: ded8ccf9

 ("luci-base-ucode: add initial ucode based LuCI runtime")
Ref: https://forum.openwrt.org/t/x/141426/10
Signed-off-by: Jo-Philipp Wich <jo@mein.io>