sdk: Codebuff's fixes so index.d.ts is bundled in dist #5770

Job	Run time
build-and-check	2m 33s
test-integration-packages/billing	1m 8s
test-integration-packages/internal	59s
test-integration-packages/agent-runtime	41s
test-integration-sdk	38s
test-integration-web	47s
test-integration-common	39s
test-.agents	48s
test-integration-cli	49s
test-packages/billing	39s
test-common	41s
test-packages/agent-runtime	48s
test-packages/internal	47s
test-web	51s
test-sdk	41s
test-cli	58s
	14m 27s

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