fix: generate variants on fails base64 image

[preschian]

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PR Type

• Bugfix
• Feature
• Refactoring

Context

• Fix failed to load image Denver test drop issues #9559 (comment). This PR will trigger "new variants" again if base64 on the image only returns 'data:,'

Did your issue had any of the "$" label on it?

• My DOT address: Payout

Screenshot 📸

• My fix has changed UI

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[codeclimate]

Code Climate has analyzed commit 7c0d3cb and detected 0 issues on this pull request.

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[prury]

appeared only once, then i cleared cache and it no longer showed, i hope its fixed, ty @preschian
@yangwao please include this in release

[yangwao]

seems it was worth to wait

[yangwao]

Thanks!
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