[Tizen] Fix Frame show clipper canvas issue

[JoonghyunCho]

Description of Change

This PR fixes Frame not creating unused clipper.
The clipper only needs to be created when Frame has Content.
Otherwise, white color clipper will be unexpectedly drawn in Frame as background.

Issues Resolved

• N/A

API Changes

• None

Platforms Affected

• Tizen

Behavioral/Visual Changes

Before:

1. Frame without Content : This includes white background which is unexpected.
2. Frame with BackgroundColor which has alpha : The background blends with white background which is unexpected.
3. Frame with Content : Proper behavior.
   

After:

1. Frame without Content : This includes empty background. (Proper behavior.)
2. Frame with BackgroundColor which has alpha : The background blends with real background. (Proper behavior.)
3. Frame with Content : (Proper behavior.)
   

Testing Procedure

PR Checklist

• Targets the correct branch
• Tests are passing (or failures are unrelated)

[rookiejava]

good catch! Thanks.