fix: remove blocks and microblocks from requested status if the connection times out

[jcnelson]

This will prevent a block or microblock download from stalling for ~1 minute if the request times out.

[codecov[bot]]

Codecov Report

Merging #3050 (8c47ede) into develop (30890c6) will decrease coverage by 0.09%. The diff coverage is 0.00%.

@@             Coverage Diff             @@
##           develop    #3050      +/-   ##
===========================================
- Coverage    83.83%   83.74%   -0.10%     
===========================================
  Files          248      248              
  Lines       196916   196934      +18     
===========================================
- Hits        165090   164914     -176     
- Misses       31826    32020     +194     

Impacted Files	Coverage Δ
src/net/download.rs	41.02% <0.00%> (-0.28%)	:arrow_down:
...ommon/src/deps_common/bitcoin/network/serialize.rs	44.00% <0.00%> (-4.00%)	:arrow_down:
src/burnchains/bitcoin/mod.rs	37.68% <0.00%> (-2.90%)	:arrow_down:
testnet/stacks-node/src/tests/neon_integrations.rs	88.34% <0.00%> (-2.08%)	:arrow_down:
src/burnchains/bitcoin/indexer.rs	83.24% <0.00%> (-1.54%)	:arrow_down:
src/cost_estimates/mod.rs	47.48% <0.00%> (-0.72%)	:arrow_down:
clarity/src/vm/analysis/errors.rs	69.50% <0.00%> (-0.50%)	:arrow_down:
src/net/p2p.rs	58.06% <0.00%> (-0.44%)	:arrow_down:
src/chainstate/stacks/index/storage.rs	79.66% <0.00%> (-0.38%)	:arrow_down:
src/chainstate/coordinator/mod.rs	92.34% <0.00%> (-0.32%)	:arrow_down:
... and 22 more

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[kantai]

This change looks fine to me, but is this possible to test via a unit test? Also, this should get a changelog entry.