When `show_federated_shares_to_trusted_servers_as_internal` is enabled,
lookup server results were being filtered out because they lacked the
`isTrustedServer` flag. This adds the flag to lookup results by:
- Injecting TrustedServers service into LookupPlugin
- Adding `server` and `isTrustedServer` fields to each lookup result
- Updating tests to reflect new structure
This ensures lookup results from trusted servers appear in internal
sharing while non-trusted servers are correctly filtered out.
Signed-off-by: nfebe <fenn25.fn@gmail.com>
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