refactor: migrate billing and test files to dependency injection pattern #5389

Job	Run time
build-and-check	2m 47s
test-cli	1m 9s
test-.agents	48s
test-packages/agent-runtime	48s
test-packages/billing	51m 26s
test-packages/internal	47s
test-integration-common	40s
test-common	38s
test-web	41s
test-sdk	41s
test-integration-web	38s
test-integration-packages/agent-runtime	44s
test-integration-cli	48s
test-integration-sdk	44s
test-integration-packages/billing	51s
test-integration-.agents	46s
test-integration-packages/internal	42s
	1h 5m 38s

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