The /workflowBatch/falsePositive/request endpoint expects
multipart/form-data with text fields (name, reason, description,
expirationDate, overrideControl, subjectFilterRequest, isEmptyWorkflow)
and inline file uploads — not a JSON body with separate attachment calls.
- Add ivantiFormPost() helper for mixed form fields + files
- Replace buildIvantiPayload with buildIvantiFormFields + buildSubjectFilterRequest
- Remove separate attachment upload loop (files sent inline)
- Update response handling for { id, created } shape
03e60c9daf