feat: support grpc message size as env #28150

Job	Run time
changes	11s
Check changes to generated code	8m 38s
Build & cache Go code	2m 47s
Lint Go code	2m 9s
Ensure Go modules synchronicity	17s
Build, test & lint UI code	0s
Run unit tests with -race for Go packages	8m 3s
Run end-to-end tests (v1.29.1)	46m 27s
Run unit tests for Go packages	4m 30s
Run end-to-end tests (v1.28.6)	44m 50s
Run end-to-end tests (v1.27.10)	45m 0s
Run end-to-end tests (v1.26.13)	45m 5s
Run end-to-end tests (v1.25.16)	46m 58s
Process & analyze test artifacts	0s
E2E Tests - Composite result	1s
	4h 14m 56s

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