server: Add verification of whether lock was called within out outside of apply

[serathius]

cc @ptabor @ahrtr

[codecov-commenter]

Codecov Report

Merging #13885 (34c0a55) into main (6c974a3) will decrease coverage by 0.13%.
The diff coverage is 0.00%.

❗ Current head 34c0a55 differs from pull request most recent head 1d35170. Consider uploading reports for the commit 1d35170 to get more accurate results

@@            Coverage Diff             @@
##             main   #13885      +/-   ##
==========================================
- Coverage   72.51%   72.37%   -0.14%     
==========================================
  Files         468      469       +1     
  Lines       38255    38276      +21     
==========================================
- Hits        27739    27704      -35     
- Misses       8734     8785      +51     
- Partials     1782     1787       +5     

Flag	Coverage Δ
all	72.37% <0.00%> (-0.14%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
server/storage/backend/batch_tx.go	60.79% <0.00%> (-2.15%)	⬇️
server/storage/backend/verify.go	0.00% <0.00%> (ø)
server/proxy/grpcproxy/register.go	69.76% <0.00%> (-9.31%)	⬇️
client/pkg/v3/fileutil/lock_linux.go	72.22% <0.00%> (-8.34%)	⬇️
server/etcdserver/api/v3rpc/interceptor.go	75.52% <0.00%> (-7.30%)	⬇️
server/storage/wal/file_pipeline.go	90.69% <0.00%> (-4.66%)	⬇️
server/storage/mvcc/watchable_store.go	85.86% <0.00%> (-3.27%)	⬇️
client/v3/leasing/txn.go	88.09% <0.00%> (-3.18%)	⬇️
client/v3/experimental/recipes/key.go	75.34% <0.00%> (-2.74%)	⬇️
client/pkg/v3/testutil/leak.go	60.17% <0.00%> (-2.66%)	⬇️
... and 19 more

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