fix(ecr): pass AssumeRoleArn in StartDockerDaemonAndDockerLogin

The DockerCredentials literal in StartDockerDaemonAndDockerLogin was
missing AssumeRoleArn, causing ec2rolecreds fallback failure in pods.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: abhibhaw

ci-runner/helper/DockerHelper.go

@@ -174,6 +174,7 @@ func (impl *DockerHelperImpl) StartDockerDaemonAndDockerLogin(commonWorkflowRequ
 				AwsRegion:          commonWorkflowRequest.AwsRegion,
 				AccessKey:          commonWorkflowRequest.AccessKey,
 				SecretKey:          commonWorkflowRequest.SecretKey,
+				AssumeRoleArn:      commonWorkflowRequest.AssumeRoleArn,
 				DockerRegistryURL:  commonWorkflowRequest.IntermediateDockerRegistryUrl,
 				DockerRegistryType: commonWorkflowRequest.DockerRegistryType,
 				CredentialsType:    commonWorkflowRequest.CredentialsType,