Make it easier to use IEventHandle as an unfiltered event type in tests

[snaury]

Changelog entry

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Changelog category

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Additional information

Make it easier to write test helpers that can transparently use IEventHandle as an unfiltered event type.

[github-actions]

⚪ 2024-09-04 11:44:42 UTC Pre-commit check linux-x86_64-release-clang14 for a9b829c has started.
⚪ 2024-09-04 11:48:01 UTC ya make is running...
🟢 2024-09-04 12:44:59 UTC Build successful.

[github-actions]

⚪ 2024-09-04 11:45:10 UTC Pre-commit check linux-x86_64-relwithdebinfo for a9b829c has started.
⚪ 2024-09-04 11:48:31 UTC ya make is running...
🟡 2024-09-04 13:40:00 UTC Some tests failed, follow the links below. Going to retry failed tests...

Test history | Ya make output

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
76355	62592	0	6	13736	21

⚪ 2024-09-04 13:47:42 UTC ya make is running... (failed tests rerun, try 2)
🟢 2024-09-04 13:55:26 UTC Tests successful.

Test history | Ya make output

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
37 (only retried tests)	23	0	0	0	14

🟢 2024-09-04 13:55:33 UTC Build successful.
🟡 2024-09-04 13:56:09 UTC ydbd size 8.3 GiB changed* by +121.2 KiB, which is >= 100.0 KiB vs main: Warning

ydbd size dash	main: 376e237	merge: a9b829c	diff	diff %
ydbd size	8 921 490 704 Bytes	8 921 614 800 Bytes	+121.2 KiB	+0.001%
ydbd stripped size	481 969 608 Bytes	481 969 608 Bytes	0 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]

⚪ 2024-09-04 11:45:43 UTC Pre-commit check linux-x86_64-release-asan for a9b829c has started.
⚪ 2024-09-04 11:48:59 UTC ya make is running...
🔴 2024-09-04 14:16:08 UTC Some tests failed, follow the links below.

Test history | Ya make output

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
14100	13961	0	44	68	27

🟢 2024-09-04 14:17:21 UTC Build successful.
🟢 2024-09-04 14:18:11 UTC ydbd size 5.5 GiB changed* by +2.1 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 376e237	merge: a9b829c	diff	diff %
ydbd size	5 957 103 392 Bytes	5 957 105 536 Bytes	+2.1 KiB	+0.000%
ydbd stripped size	1 490 087 184 Bytes	1 490 087 120 Bytes	-64 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}