Determine whether to remove deprecated methods from client-api

[yannbf]

It's unclear whether to remove these deprecated methods from client-api module in Storybook 8:

raw:

storybook/code/lib/preview-api/src/modules/client-api/ClientApi.ts

Line 369 in 8d612f3

raw = () => {

get _storyStore:

storybook/code/lib/preview-api/src/modules/client-api/ClientApi.ts

Line 374 in 8d612f3

get _storyStore() {

@ndelangen @shilman please let us know whenever you can, and what can be done migration-wise 🙏

This might be related to other deprecations in #25365

[shilman]

This should also be removed as part of StoryStoreV6 removal AFAIK