v2.2: Fix - Allow ExtendProgramChecked in CPI (backport of #6245)

[mergify]

Problem

See solana-foundation/solana-improvement-documents#164 (comment).

Feature Gate Issue: https://github.com/anza-xyz/feature-gate-tracker/issues/87

Summary of Changes

Allows invoking loader-v3 ExtendProgramChecked in CPI.
Rekeys the feature enable_extend_program_checked.

---

This is an automatic backport of pull request #6245 done by Mergify.

[mergify]

Cherry-pick of f5616d3 has failed:

On branch mergify/bp/v2.2/pr-6245
Your branch is up to date with 'origin/v2.2'.

You are currently cherry-picking commit f5616d356.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   Cargo.toml
	modified:   feature-set/src/lib.rs
	modified:   genesis/Cargo.toml
	modified:   programs/bpf_loader/src/syscalls/cpi.rs
	modified:   programs/sbf/Cargo.toml

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   Cargo.lock
	both modified:   programs/sbf/Cargo.lock
	both modified:   svm/examples/Cargo.lock

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

[mergify]

The Firedancer team maintains a line-for-line reimplementation of the
native programs, and until native programs are moved to BPF, those
implementations must exactly match their Agave counterparts.
If this PR represents a change to a native program implementation (not
tests), please include a reviewer from the Firedancer team. And please
keep refactors to a minimum.

[t-nelson]

@mergify rebase

[mergify]

rebase

✅ Branch has been successfully rebased

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.

Project coverage is 83.4%. Comparing base (4311abc) to head (d2fd13e).
Report is 1 commits behind head on v2.2.

Additional details and impacted files

@@           Coverage Diff            @@
##             v2.2    #6443    +/-   ##
========================================
  Coverage    83.4%    83.4%            
========================================
  Files         807      807            
  Lines      373478   373484     +6     
========================================
+ Hits       311507   311614   +107     
+ Misses      61971    61870   -101     

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