Workaround dupe resource directories

A few apps are co-located with libraries they depend on statically,
and because it's not possible to specify "no resource_dirs", they
both end up depending on the same resources, leading to downstream
problems for RRO generation.

Workaround the problem by de-duping the RRO paths for a single app
for now.

Bug: 124035856
Bug: 123510624
Test: make with enforce_rro == *
Change-Id: I251f123eb4280ed72e1ccd2212cb5f3e746e645d