Upgrade `avatarMiddleware` to `polymiddleware` #3266

Job	Run time
Print commit stats	1m 1s
Build samples	27s
Build	5m 6s
Verify build-browser (windows-latest)	2m 21s
Verify build-browser (macos-26)	48s
Verify build-browser (ubuntu-latest)	55s
Unit test	3m 3s
Static code analysis	4m 11s
Type definitions test	2m 16s
HTML test (5/17)	7m 56s
HTML test (2/17)	7m 47s
HTML test (4/17)	7m 39s
HTML test (6/17)	7m 39s
HTML test (9/17)	8m 8s
HTML test (8/17)	7m 21s
HTML test (1/17)	7m 0s
HTML test (3/17)	7m 34s
HTML test (11/17)	7m 48s
HTML test (14/17)	8m 2s
HTML test (16/17)	7m 56s
HTML test (17/17)	7m 11s
HTML test (10/17)	7m 34s
HTML test (12/17)	7m 37s
HTML test (7/17)	7m 5s
HTML test (13/17)	7m 33s
HTML test (15/17)	7m 6s
Merge test snapshots	4s
Merge test results	29s
	2h 29m 37s

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