Do not expose internal exception details in GraphQL

[luizm]

The GraphQL API currently returns internal exception details to clients. I think the response should be sanitized

Example

feign.graphql.GraphqlErrorException: GraphQL backendRuntimeDefaultConfig operation failed: [{message=Exception while fetching data (/backendRuntimeDefaultConfig) : An error: (java.util.concurrent.CompletionException: javax.security.sasl.SaslException: Failed to find AWS IAM Credentials [Caused by software.amazon.awssdk.core.exception.SdkClientException: Received an UnknownHostException when attempting to interact with a service. See cause for the exact endpoint that is failing to resolve. If this is happening on an endpoint that previously worked, there may be a network connectivity issue or your DNS cache could be storing endpoints for too long.]) occurred when evaluating SASL token received from the Kafka Broker. Kafka Client will go to AUTHENTICATION_FAILED state., locations=[{line=2, column=5}], path=[backendRuntimeDefaultConfig], extensions={classification=DataFetchingException}}]
	at feign.graphql.GraphqlDecoder.doDecode(GraphqlDecoder.java:73)
	at feign.graphql.GraphqlDecoder.decode(GraphqlDecoder.java:48)
	at feign.InvocationContext.decode(InvocationContext.java:121)
	at feign.InvocationContext.proceed(InvocationContext.java:94)
	at feign.ResponseHandler.handleResponse(ResponseHandler.java:69)
	at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:109)
	at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:53)
	at io.github.resilience4j.retry.Retry.lambda$decorateCheckedFunction$3(Retry.java:226)
	at io.github.resilience4j.feign.DecoratorInvocationHandler.invoke(DecoratorInvocationHandler.java:95)
	at jdk.proxy2/jdk.proxy2.$Proxy59.backendRuntimeDefaultConfig(Unknown Source)
	at com.datasqrl.backend.BackendApiProducer_ProducerMethod_backendGraphqlApi_vpNTr8qQoelpIK7jmgIltNixA4Y_ClientProxy.backendRuntimeDefaultConfig(Unknown Source)
	at com.datasqrl.backend.GuardedBackendClient.backendRuntimeDefaultConfig(GuardedBackendClient.java:92)
	at com.datasqrl.backend.GuardedBackendClient_ClientProxy.backendRuntimeDefaultConfig(Unknown Source)
	at com.datasqrl.kubedeploy.steps.SaveDeploymentConfiguration.execute(SaveDeploymentConfiguration.java:47)
	at com.datasqrl.kubedeploy.steps.SaveDeploymentConfiguration_ClientProxy.execute(Unknown Source)
	at com.datasqrl.kubedeploy.DeploymentProcessor.doProcess(DeploymentProcessor.java:111)
	at com.datasqrl.kubedeploy.DeploymentProcessor.process(DeploymentProcessor.java:78)
	at com.datasqrl.kubedeploy.DeploymentProcessor_Subclass.process$$superforward(Unknown Source)
	at com.datasqrl.kubedeploy.DeploymentProcessor_Subclass$$function$$1.apply(Unknown Source)
	at io.quarkus.arc.impl.AroundInvokeInvocationContext.proceed(AroundInvokeInvocationContext.java:73)
	at io.quarkus.arc.impl.AroundInvokeInvocationContext.proceed(AroundInvokeInvocationContext.java:62)
	at io.quarkus.arc.impl.ActivateRequestContextInterceptor.invoke(ActivateRequestContextInterceptor.java:129)
	at io.quarkus.arc.impl.ActivateRequestContextInterceptor.aroundInvoke(ActivateRequestContextInterceptor.java:33)
	at io.quarkus.arc.impl.ActivateRequestContextInterceptor_Bean.intercept(Unknown Source)
	at io.quarkus.arc.impl.InterceptorInvocation.invoke(InterceptorInvocation.java:42)
	at io.quarkus.arc.impl.AroundInvokeInvocationContext.perform(AroundInvokeInvocationContext.java:30)
	at io.quarkus.arc.impl.InvocationContexts.performAroundInvoke(InvocationContexts.java:27)
	at com.datasqrl.kubedeploy.DeploymentProcessor_Subclass.process(Unknown Source)
	at com.datasqrl.kubedeploy.DeploymentProcessor_ClientProxy.process(Unknown Source)
	at com.datasqrl.kubedeploy.KubeDeployService.lambda$schedule$0(KubeDeployService.java:176)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:328)
	at java.base/java.util.concurrent.ThreadPerTaskExecutor$ThreadBoundFuture.run(ThreadPerTaskExecutor.java:323)
	at java.base/java.lang.VirtualThread.run(VirtualThread.java:456)