Multi-Line Text metadata not available if Text variable is created in a Blueprint

The Multi-line Text metadata specifier is not able to be set in a Blueprint. This means that text variables that are created directly inside of a blueprint cannot have this specifier set and cannot have line breaks.

Workaround: Create your text variables in a struct, where this metadata specifier is available

Regression?: No
This also occurred in 4.13

1. Create a new blueprint
2. Add a text variable
3. Check the text variable's metadata properties
   Result: The multi-line text metadata property is not available
   Expected: The multi-line text metadata property is available