fix: unclosed tag (#5464) (CP: v24)

[vaadin-bot]

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AI Language Review

The main issues in the provided TypeScript/LitElement code that require improvement are as follows:

1. Inconsistent Quotation Style:
   Ensure consistent use of single or double quotes throughout the file. The JavaScript typically uses single quotes, but there are some double-quoted strings like in the mutateOberserver and warn messages.

2. Spelling Mistakes:

   • In the state decorator, correct "mutateOberserver" to "mutationObserver."
   • The attribute in the anchor tag within the <dspublisher-footer> component should be rel="noopener" instead of rel="noopened".

3. Code Redundancy:

   • The file contains redundant and duplicated code that should be refactored for clarity and maintenance. For instance, the styles and logic appear twice in the import section and throughout the class definitions. Ensure there are no repeated blocks across the document, especially in the .new file.

4. Markup and Accessibility:

   • Ensure that there is an alt text provided for images, as seen in the toc-footer, for improved accessibility. If an alt attribute is already present in the <img> tag, verify its existence in both instances across styles.

Ensuring consistency across all these points will make the code more readable and maintainable.