chore: fix oxlint errors (#13434)

#### PR Dependency Tree


* **PR #13434** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit

* **Style**
* Improved clarity of TypeScript error suppression comments across
various test files and helper scripts. Comments now specify the reasons
for ignoring specific type errors, enhancing code readability for
developers.
* **Chores**
* Updated inline comments without affecting application functionality or
user experience. No changes to features, logic, or test outcomes.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

blocksuite/affine/widgets/drag-handle/src/helpers/preview-helper.ts

@@ -114,6 +114,7 @@ export class PreviewHelper {
     });
 
     let width: number = 500;
+    // oxlint-disable-next-line no-unassigned-vars
     let height;
 
     const noteBlock = this.widget.host.querySelector('affine-note');