fix: dont show empty string on spotlight

[preschian]

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PR type

• Bugfix
• Feature
• Refactoring

What's new?

• similar to this issue fix: make sure spotlight name not null #4203. not only null, spotlight can return empty string

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• My contribution builds clean without any errors or warnings
• I've merged recent default branch -- main and I've no conflicts
• I've tried to respect high code quality standards
• I've didn't break any original functionality
• I've posted a screenshot of demonstrated change in this PR

Optional

• I've tested it at </rmrk/collection/26902bc2f7c20c546a-1FVG7>
• I've tested PR on mobile and everything seems works
• I found edge cases
• I've written some unit tests 🧪

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Screenshot

• My fix has changed something on UI; a screenshot is best to understand changes for others.

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[codeclimate]

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