Disable claude oauth #5843

Job	Run time
build-and-check	2m 52s
test-integration-packages/billing	1m 15s
test-integration-packages/internal	1m 3s
test-integration-packages/agent-runtime	49s
test-integration-sdk	1m 18s
test-integration-web	44s
test-integration-common	46s
test-packages/agent-runtime	39s
test-integration-cli	48s
test-.agents	43s
test-cli	52s
test-packages/internal	54s
test-packages/billing	44s
test-common	42s
test-web	47s
test-sdk	42s
	15m 38s

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