Upgrade `avatarMiddleware` to `polymiddleware` #3218

Job	Run time
Build samples	29s
Verify build-browser (windows-latest)	2m 7s
Print commit stats	1m 2s
Verify build-browser (ubuntu-latest)	47s
Verify build-browser (macos-26)	1m 25s
Build	4m 48s
Static code analysis	3m 56s
Type definitions test	2m 12s
Unit test	3m 26s
HTML test (6/17)	7m 47s
HTML test (8/17)	7m 16s
HTML test (7/17)	7m 48s
HTML test (2/17)	7m 48s
HTML test (3/17)	7m 47s
HTML test (13/17)	7m 51s
HTML test (4/17)	8m 2s
HTML test (15/17)	7m 8s
HTML test (1/17)	7m 14s
HTML test (14/17)	7m 46s
HTML test (5/17)	8m 7s
HTML test (11/17)	7m 41s
HTML test (10/17)	7m 36s
HTML test (17/17)	7m 38s
HTML test (16/17)	7m 55s
HTML test (12/17)	8m 5s
HTML test (9/17)	8m 25s
Merge test snapshots	7s
Merge test results	38s
	2h 32m 51s

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