Resolve "Web IDE new directory dialog shows file templates"

What does this MR do?

Hides file template suggestions when creating a new directory

What are the relevant issue numbers?

Closes #57544 (closed)

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Tests added for this feature/bug
• Tested in all supported browsers
• Conforms to the code review guidelines
• Conforms to the style guides