fix: token instance preload

[sl1depengwyn]

Motivation

{"time":"2024-06-20T10:46:10.881Z","severity":"error","message": "#PID[0.25537.554](https://app.slack.com/client/0.25537.554) running BlockScoutWeb.Endpoint (connection #PID[0.25555.554](https://app.slack.com/client/0.25555.554), stream id 1) terminated\nServer: [eth-sepolia.k8s-dev.blockscout.com:80](http://eth-sepolia.k8s-dev.blockscout.com/) (http)\nRequest: GET /api/v2/tokens/0xcE818599DaBa7e1e7B1bcc1Ce0607010ff4e0B83/instances\n** (exit) an exception was raised:\n    ** (RuntimeError) proxy_implementations is not loaded for address\n        (block_scout_web 6.7.0) lib/block_scout_web/views/api/v2/helper.ex:61: BlockScoutWeb.API.V2.Helper.address_with_info/2\n        (block_scout_web 6.7.0) lib/block_scout_web/views/api/v2/helper.ex:35: BlockScoutWeb.API.V2.Helper.address_with_info/5\n        (block_scout_web 6.7.0) lib/bl…

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