Fix parallel requests

[speeddragon]

Issue

When set <<"parallel">> => true in a route, the request will return 404 Not Found, because an error occurred in the code.

Example:

            #{
                % Routes for GraphQL requests to use a remote GraphQL API.
                <<"template">> => <<"/graphql">>,
                <<"parallel">> => true,
                <<"nodes">> =>
                    [
                        #{
                            <<"prefix">> => <<"https://ao-search-gateway.goldsky.com">>,
                            <<"opts">> => #{ http_client => httpc, protocol => http2 }
                        },
                        #{
                            <<"prefix">> => <<"https://arweave-search.goldsky.com">>,
                            <<"opts">> => #{ http_client => httpc, protocol => http2 }
                        },
                        #{
                            <<"prefix">> => <<"https://arweave.net">>,
                            <<"opts">> => #{ http_client => gun, protocol => http2 }
                        }
                    ]
            },

Related pull requests

• Feat: Handling invalid messages in hb_store_gateway #598 will make 404 into a 500.
• fix: Load routes via store #563 is needed for the test to work as expected.

[speeddragon]

Set Routes here, will not have an impact how parallel property if obtained, because if not present in the Store configuration, it will be fetched from hb_opts:default_message.