refactor: migrate billing and test files to dependency injection pattern #5378

Job	Run time
build-and-check	2m 31s
test-integration-cli	41s
test-integration-common	47s
test-integration-packages/billing	39s
test-integration-.agents	45s
test-packages/billing	42s
test-packages/internal	48s
test-integration-packages/internal	40s
test-.agents	41s
test-sdk	43s
test-integration-web	43s
test-common	43s
test-integration-packages/agent-runtime	42s
test-integration-sdk	41s
test-packages/agent-runtime	57s
test-cli	1m 8s
test-web	49s
	14m 40s

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