refactor: migrate billing and test files to dependency injection pattern #5409

Job	Run time
build-and-check	2m 45s
test-packages/agent-runtime	49s
test-.agents	42s
test-integration-packages/internal	48s
test-integration-cli	47s
test-common	37s
test-integration-web	48s
test-integration-packages/agent-runtime	47s
test-sdk	52s
test-packages/billing	51s
test-integration-.agents	43s
test-web	52s
test-integration-sdk	37s
test-integration-common	41s
test-cli	1m 14s
test-packages/internal	54s
test-integration-packages/billing	43s
	15m 30s

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