getConfirmedBlocks now has an upper limit on slot range (bp #10927)

[mergify]

This is an automated backport of pull request #10927 done by Mergify

Cherry-pick of aef6bf2 has failed:

On branch mergify/bp/v1.1/pr-10927
Your branch is up to date with 'origin/v1.1'.

You are currently cherry-picking commit aef6bf272.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:

	modified:   client/src/rpc_request.rs
	modified:   docs/src/apps/jsonrpc-api.md

Unmerged paths:
  (use "git add <file>..." to mark resolution)

	both modified:   core/src/rpc.rs

To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

Mergify commands and options

More conditions and actions can be found in the documentation.

You can also trigger Mergify actions by commenting on this pull request:

• @Mergifyio refresh will re-evaluate the rules
• @Mergifyio rebase will rebase this PR on its base branch
• @Mergifyio update will merge the base branch into this PR
• @Mergifyio backport <destination> will backport this PR on <destination> branch

Additionally, on Mergify dashboard you can:

• look at your merge queues
• generate the Mergify configuration with the simulator.

Finally, you can contact us on https://mergify.io/

[mergify]

automerge label removed due to a CI failure

[codecov]

Codecov Report

Merging #10995 into v1.1 will decrease coverage by 0.0%.
The diff coverage is 100.0%.

@@           Coverage Diff            @@
##            v1.1   #10995     +/-   ##
========================================
- Coverage   81.2%    81.1%   -0.1%     
========================================
  Files        292      292             
  Lines      68682    68702     +20     
========================================
- Hits       55793    55751     -42     
- Misses     12889    12951     +62