User can upload non-XML file type into Workflow definition editor

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.1.0 Beta 2, 7.1.0 Beta 3, 7.1.X, Master
• Component/s: Workflow
• Labels:
  • QA-AUTOMATION
• Story Points: 1
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/58755
• QA Test Name:
  • LocalFile.WorkflowUsecase#ViewInvalidDefinitionAlert
• QA Test Score: 4

Steps to Reproduce:

1. Go to Control Panel > Workflow
2. Add a new workflow
3. Click on "import a file"
4. Choose an image file (or any non-XML file)

Expected Result:
User is blocked from importing non-XML file.

Actual Result:
User can import any file.

Reproducible in DE with Kaleo Designer as well.