Remove internal UUID fields from API responses

Internal database UUIDs (id, node_id, receiver_node_id) were being
exposed in API responses. These are implementation details that should
not be visible to API consumers. The canonical identifier for nodes
is the 64-char hex public_key.

Changes:
- Remove id, node_id from NodeTagRead, NodeRead schemas
- Remove id from MemberRead schema
- Remove id, receiver_node_id, node_id from MessageRead, AdvertisementRead,
  TracePathRead, TelemetryRead schemas
- Update web map component to use public_key instead of member.id
  for owner filtering
- Update tests to not assert on removed fields

tests/test_api/test_trace_paths.py

@@ -31,7 +31,6 @@ class TestGetTracePath:
         response = client_no_auth.get(f"/api/v1/trace-paths/{sample_trace_path.id}")
         assert response.status_code == 200
         data = response.json()
-        assert data["id"] == sample_trace_path.id
         assert data["path_hashes"] == sample_trace_path.path_hashes
 
     def test_get_trace_path_not_found(self, client_no_auth):