Backport of Remove legacy provisioners from docs into v1.3

Before our website allowed selecting from older versions of Terraform to
see older documentation we needed to preserve all of the historical
upgrade guides in the latest release branch so that they'd stay available
on the website.

However, our new strategy is for each release to have its own separate
set of documentation selectable using a global version selector. We should
therefore now have only the upgrade guide for the each minor release
on its release branch, with the upgrade guides for earlier releases
instead maintained on their own branches.

However, our v1.1 branch is, as a matter of pragmatism, serving as the home
for the "v1.1 and earlier" documentation, and so there will continue to
be multiple upgrade guides on that branch. For that reason, we're
preserving the URL scheme "upgrade-guides" (plural) even though the URL
now points to only a single version upgrade guide because that causes
readers to land in the correct place if they are on a modern version's
upgrade guide page and they use the version selector to choose the
"v1.1 and earlier" option.

Merge pull request #31766 from hashicorp/backport/clarify-backend-state-storage/ultimately-causal-ladybird

Backport of Add more context about local backend configuration state file into v1.3

Update Cloud Block Docs

Merge pull request #31732 from hashicorp/backport/alisdair/typeexpr-upstreamed/annually-hopeful-filly

Backport of Use upstreamed HCL typexpr package into v1.3

Co-authored-by: Katy Moe <katy@katy.moe>

* remove deprecated backends

* remove backend docs

Remove references to deprecated backends from docs.

Send the JSON state representation to Cloud backend (when available)

Add a new ChangeReason, ReasonDeleteBecauseNoMoveTarget, to provide better
information in cases where a planned deletion is due to moving a resource to
a target not in configuration.

Consider a case in which a resource instance exists in state at address A, and
the user adds a moved block to move A to address B. Whether by the user's
intention or not, address B does not exist in configuration.
Terraform combines the move from A to B, and the lack of configuration for B,
into a single delete action for the (previously nonexistent) entity B.
Prior to this commit, the Terraform plan will report that resource B will be
destroyed because it does not exist in configuration, without explicitly
connecting this to the move.

This commit provides the user an additional clue as to what has happened, in a
case in which Terraform has elided a user's action and inaction into one
potentially destructive change.

updating to use the latest version of cloud/state.go and just pass schemas along to PersistState in the remote state

Update init.mdx

rephrased according to the suggestion.

This is a clumsy way to do this, but a pragmatic way to inform potential
consumers that this part of the format is not yet finalized without having
to read the docs to see our warning about that.

We need to get some practical experience with a few different consumers
making use of this format before we can be confident that it's designed
appropriately. We're not _expecting_ to break it, but we'd like to leave
the opportunity open in case we quickly learn that there's something
non-ideal about this design.