deprecate PresentationRpcInterface (backport #7319) [release/4.11.x]

[mergify]

We are planning to deprecate RPC altogether in the future, and while we don't have a replacement just yet, we can at least encourage people to use various wrappers instead of calling RPC interfaces directly. This way the transition to new APIs will be less disruptive. Presentation is the only RPC interface where all the methods are public and not internal.

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This is an automatic backport of pull request #7319 done by Mergify.

[mergify]

Cherry-pick of 0990a56 has failed:

On branch mergify/bp/release/4.11.x/pr-7319
Your branch is up to date with 'origin/release/4.11.x'.

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Changes to be committed:
	modified:   common/api/presentation-common.api.md
	new file:   common/changes/@itwin/presentation-backend/deprecate-presentation-rpc_2024-11-06-13-28.json
	new file:   common/changes/@itwin/presentation-common/deprecate-presentation-rpc_2024-11-04-15-22.json
	modified:   full-stack-tests/presentation/src/rpc/PresentationRpcInterface.test.ts
	modified:   presentation/backend/src/presentation-backend/PresentationRpcImpl.ts
	modified:   presentation/backend/src/test/PresentationRpcImpl.test.ts
	modified:   presentation/common/src/presentation-common/PresentationRpcInterface.ts
	modified:   presentation/common/src/presentation-common/RpcRequestsHandler.ts
	modified:   presentation/common/src/test/PresentationRpcInterface.test.ts
	modified:   presentation/common/src/test/RpcRequestsHandler.test.ts

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   docs/changehistory/NextVersion.md

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally