feat!: rename sharedimmutable methods

[nventuro]

We used to have to do this because we only knew the context at runtime, but since https://github.com/AztecProtocol/aztec-packages/pull/6442 we no longer need this. I'm also doing this for some other state vars, but chose do to so in separate PRs as some of those changes are a bit messier.

[AztecBot]

Docs Preview

Hey there! 👋 You can check your preview at https://6744942a4590e908f443135c--aztec-docs-dev.netlify.app