Fix create snippet disabled on empty file path

Merged Paul Slaughter requested to merge 239341-fix-snippets-create-without-file-path into master

What does this MR do?

This MR fixes #239341 (closed) introduced in !38855 (merged).

It turns out that the BE supports sending empty file paths for snippets, and a file name will be auto-generated.

Screenshots

Before After After submission
Screen_Shot_2020-08-25_at_11.41.51_AM Screen_Shot_2020-08-25_at_11.40.54_AM Screen_Shot_2020-08-25_at_11.41.06_AM

Does this MR meet the acceptance criteria?

Conformity

References

Edited by Paul Slaughter