v2.1: transaction-status: Add confidential transfer tests (backport of #3786)

[mergify]

Problem

The new parsers for the confidential transfer extensions in #3431 don't have any tests, which is dangerous because they involve indexing directly into arrays, which can panic at runtime.

Summary of changes

Add tests for all the instructions involving proofs, which have the more complicated parsing logic. Specifically, it's testing to make sure that nothing panics.

These tests actually uncovered a bug that triggered a panic for instructions with just barely enough accounts and also the instructions sysvar.

We'll need to backport this with #3645.

---

This is an automatic backport of pull request #3786 done by Mergify.

[mergify]

Cherry-pick of 8730dbb has failed:

On branch mergify/bp/v2.1/pr-3786
Your branch is up to date with 'origin/v2.1'.

You are currently cherry-picking commit 8730dbbb88.
  (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.lock
	modified:   transaction-status/Cargo.toml
	modified:   transaction-status/src/parse_token/extension/confidential_transfer_fee.rs

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	both modified:   Cargo.toml
	deleted by us:   transaction-status/src/parse_token/extension/confidential_mint_burn.rs
	both modified:   transaction-status/src/parse_token/extension/confidential_transfer.rs

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

[willhickey]

v2.1 is nearly ready for mainnet-beta, so closing this as stale. Re-open if you think it deserves further consideration