The addition of "keys" in `state.api.provided` breaks rehydration

[GertSallaerts]

From Release 2.7.0

We've restructured the state.api.provided data structure to handle reverse-mapping between tags and cache keys, which drastically improves performance in this case.

I believe this is what is breaking rehydration. I've created a codesandbox: https://codesandbox.io/p/devbox/rtk-query-persist-pending-forked-h93g47?workspaceId=ws_CAJAxLFH2LyYTzcwzts226

If you refresh the example once or twice, you'll see an error about cacheKeys not being iterable. I think I traced it back to this line:

redux-toolkit/packages/toolkit/src/query/core/buildSlice.ts

Line 542 in d8190e3

for (const [id, cacheKeys] of Object.entries(incomingTags)) {

That needs to go one level deeper into the state structure unless I'm mistaken.

[markerikson]

Yeah, I was working on a fix for this a few days ago and haven't had a chance to get it in yet.

[markerikson]

Out in https://github.com/reduxjs/redux-toolkit/releases/tag/v2.9.0 !