Add read iterator cancellation to ReadRows RPC

[SammyVimes]

No description provided.

[github-actions]

⚪ 2025-06-17 15:02:08 UTC Pre-commit check linux-x86_64-release-asan for 1ed5441 has started.
⚪ 2025-06-17 15:02:16 UTC Artifacts will be uploaded here
⚪ 2025-06-17 15:05:14 UTC ya make is running...
🔴 2025-06-17 15:15:58 UTC Build failed, see the logs. Also see fail summary
🟢 2025-06-17 15:16:25 UTC ydbd size 3.7 GiB changed* by +31.9 KiB, which is < 100.0 KiB vs stream-nb-25-1: OK

ydbd size dash	stream-nb-25-1: f3ea51b	merge: 1ed5441	diff	diff %
ydbd size	3 933 411 392 Bytes	3 933 444 008 Bytes	+31.9 KiB	+0.001%
ydbd stripped size	1 375 360 784 Bytes	1 375 371 600 Bytes	+10.6 KiB	+0.001%

^{*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]

⚪ 2025-06-17 15:02:59 UTC Pre-commit check linux-x86_64-relwithdebinfo for 1ed5441 has started.
⚪ 2025-06-17 15:03:15 UTC Artifacts will be uploaded here
⚪ 2025-06-17 15:06:35 UTC ya make is running...
🔴 2025-06-17 15:17:21 UTC Build failed, see the logs. Also see fail summary
🟢 2025-06-17 15:17:38 UTC ydbd size 2.1 GiB changed* by +19.8 KiB, which is < 100.0 KiB vs stream-nb-25-1: OK

ydbd size dash	stream-nb-25-1: f3ea51b	merge: 1ed5441	diff	diff %
ydbd size	2 260 874 368 Bytes	2 260 894 688 Bytes	+19.8 KiB	+0.001%
ydbd stripped size	478 498 776 Bytes	478 501 784 Bytes	+2.9 KiB	+0.001%

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