fix: issue of get icons

[qinluhe]

Fix issue: #57

Description

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Checklist

General

• I've included relevant documentation or comments for the changes introduced.
• I've tested the changes in multiple environments (e.g., different browsers, operating systems).

Testing

• I've added or updated tests to validate the changes introduced for AppFlowy Web.

Feature-Specific

• For feature additions, I've added a preview (video, screenshot, or demo) in the "Feature Preview" section.
• I've verified that this feature integrates seamlessly with existing functionality.