chore(app): hide legacy import when empty and adjust default gpu setting

[DalderupMaurice]

Description

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate)

Types of changes

• Chore (tests, refactors, and fixes)
• New feature (adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

• I have read the CONTRIBUTING guidelines and confirm that my code follows the code style of this project.
• Tests for the changes have been added (for bug fixes/features)

Documentation

• Docs need to be added/updated (for bug fixes/features)

Closing issues

Fixes #

[codecov]

Codecov Report

Merging #1197 into develop will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           develop   #1197   +/-   ##
=======================================
  Coverage     49.9%   49.9%           
=======================================
  Files          248     248           
  Lines         2120    2120           
  Branches       282     282           
=======================================
  Hits          1058    1058           
  Misses         884     884           
  Partials       178     178