refactor: migrate billing and test files to dependency injection pattern #5377

Job	Run time
build-and-check	2m 50s
test-integration-common	38s
test-integration-packages/billing	41s
test-cli	1m 8s
test-integration-packages/agent-runtime	47s
test-common	41s
test-.agents	42s
test-integration-cli	1m 1s
test-integration-.agents	44s
test-integration-web	38s
test-integration-sdk	46s
test-packages/agent-runtime	1m 17s
test-packages/billing	45s
test-web	43s
test-packages/internal	51s
test-sdk	42s
test-integration-packages/internal	41s
	15m 35s

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