[BUG] KV deserialization broke between worker 0.0.13 and 0.0.17 (worker-kv 0.5 and 0.6)

[awaitlink]

Is there an existing issue for this?

• I have searched the existing issues

What version of workers-rs are you using?

0.0.17

What version of wrangler are you using?

3.2.0

Describe the bug

The project at https://github.com/u32i64/signalupdates-bot/tree/dcc4abc965913174bc0480b56e67ff035f62426f compiles and deploys successfully, however trying to run it causes the following error when reading state from KV that looks like this:

{
  "android": {
    "last_posted_tag_previous_release": {
      "name": "..."
    },
    "last_posted_tag": {
      "name": "..."
    },
    "last_post": {
      "id": 123456,
      "number": 123
    },
    "posted_archiving_message": true,
    "localization_changes_completeness": "Incomplete",
    "localization_changes": {
      "kk": [
        "Main"
      ],
    },
    "pending_state": null
  },
  "desktop": { /* ... */ },
  "ios": { /* ... */ }
}

ERROR signalupdates_bot: error=could not get value for key state

Caused by:
    js error: JsValue(Error: invalid type: string "kk", expected a borrowed string
    Error: invalid type: string "kk", expected a borrowed string
        at ct (shim.js:369:11)
        at wasm://wasm/00e8ef02:wasm-function[812]:0x103639
        at wasm://wasm/00e8ef02:wasm-function[1076]:0x1357cf
        at wasm://wasm/00e8ef02:wasm-function[149]:0x542ce
        at wasm://wasm/00e8ef02:wasm-function[126]:0xdb86
        at wasm://wasm/00e8ef02:wasm-function[294]:0xb637c
        at wasm://wasm/00e8ef02:wasm-function[462]:0xe0076
        at wasm://wasm/00e8ef02:wasm-function[1782]:0x145b24
        at tt (shim.js:141:5)
        at b (shim.js:127:14))

I suspect the issue is with the deserialization of the Language struct.

I tried setting try_from = "String" and providing a corresponding impl, that did not fix the issue.

The "solution" was downgrading worker-kv and then downgrading worker until the project builds (awaitlink/signalupdates-bot@d46e6a4). After that the project deploys and deserializes the state successfully.

Considering the downgrade affected serde-wasm-bindgen, could be that the issue is in https://github.com/cloudflare/serde-wasm-bindgen.

Steps To Reproduce

No response