fix tx volume calculation for inserted chunks

[ivanmorozov333]

• Bugfix

[github-actions]

⚪ 2024-10-24 05:52:17 UTC Pre-commit check linux-x86_64-relwithdebinfo for be3ceb3 has started.
⚪ 2024-10-24 05:52:28 UTC Artifacts will be uploaded here
⚪ 2024-10-24 06:05:12 UTC ya make is running...
🟢 2024-10-24 07:07:41 UTC Tests successful.

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
41416	35817	0	0	5503	96

🟢 2024-10-24 07:11:08 UTC Build successful.
🟢 2024-10-24 07:11:25 UTC ydbd size 2.8 GiB changed* by +1.3 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 828b029	merge: be3ceb3	diff	diff %
ydbd size	3 032 411 296 Bytes	3 032 412 640 Bytes	+1.3 KiB	+0.000%
ydbd stripped size	480 961 656 Bytes	480 961 848 Bytes	+192 Bytes	+0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}

[github-actions]

⚪ 2024-10-24 05:52:21 UTC Pre-commit check linux-x86_64-release-asan for be3ceb3 has started.
⚪ 2024-10-24 05:52:32 UTC Artifacts will be uploaded here
⚪ 2024-10-24 06:04:48 UTC ya make is running...
🟡 2024-10-24 07:34:46 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
11577	11331	0	79	66	101

🟢 2024-10-24 07:35:46 UTC Build successful.
🟢 2024-10-24 07:36:19 UTC ydbd size 5.7 GiB changed* by +1.7 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 828b029	merge: be3ceb3	diff	diff %
ydbd size	6 135 105 272 Bytes	6 135 107 016 Bytes	+1.7 KiB	+0.000%
ydbd stripped size	1 531 689 360 Bytes	1 531 689 488 Bytes	+128 Bytes	+0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}