Repair malformed tool call inputs (#578) #6350

Job	Run time
build-and-check	2m 51s
test-integration-packages/internal	1m 3s
test-integration-packages/billing	1m 11s
test-integration-common	52s
test-integration-web	40s
test-web	1m 5s
test-cli	56s
test-integration-packages/agent-runtime	50s
test-common	40s
test-packages/agent-runtime	47s
test-integration-cli	52s
test-.agents	40s
test-integration-sdk	1m 21s
test-packages/billing	46s
test-packages/internal	46s
test-sdk	42s
	16m 2s

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