feat: pox-5 clarity fixes and improvements

[hstove-stacks]

• Adds check-caller-allowed functionality (essentially identical to pox-4 and prior)
• Adds real get-total-ustx-stacked calculations, along with tests
• Adds validation that (get version pox-addr) is exactly 1 byte

[coveralls]

Coverage Report for CI Build 24093631532

Coverage increased (+0.1%) to 46.77%

Details

• Coverage increased (+0.1%) from the base build.
• Patch coverage: No coverable lines changed in this PR.
• 2517 coverage regressions across 44 files.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

2517 previously-covered lines in 44 files lost coverage.

Top 10 Files by Coverage Loss	Lines Losing Coverage	Coverage
stackslib/src/chainstate/stacks/boot/mod.rs	985	12.89%
stackslib/src/chainstate/nakamoto/signer_set.rs	362	53.0%
stackslib/src/config/mod.rs	343	48.78%
stackslib/src/chainstate/nakamoto/shadow.rs	332	10.13%
stackslib/src/chainstate/coordinator/mod.rs	128	77.07%
stacks-common/src/util/uint.rs	118	43.71%
stackslib/src/burnchains/mod.rs	30	74.17%
stackslib/src/net/p2p.rs	21	67.94%
stackslib/src/net/api/getsortition.rs	19	57.49%
stackslib/src/chainstate/nakamoto/coordinator/mod.rs	15	79.05%

---

Coverage Stats

Relevant Lines:	220075
Covered Lines:	102930
Line Coverage:	46.77%
Coverage Strength:	12434549.88 hits per line

---

💛 - Coveralls

[aaronb-stacks]

LGTM!

[brice-stacks]

I think this is confusing to take in a staker parameter here since it's not used. It made me think there was a bug, but then I realized the intention is just to update the reward-cycle-total-staked.

[hstove-stacks]

Ahh good catch, fixed in c215ab7

[CLAassistant]

All committers have signed the CLA.

[brice-stacks]

Anything need to be saved from this or can we close it?

[hstove-stacks]

We can close it!

[github-actions]

Closed PR has been locked after 14 days of inactivity.