feat(ui): add aria-label to ISBN scanner button

[Tugamer89]

What: Added an aria-label to the ISBN scanner button.
Why: The button is icon-only and lacked a descriptive label for screen readers.
Accessibility: Improved screen reader support for the ISBN scanning functionality in the "Add Book" form by adding aria-label="Scan ISBN with camera".

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PR created automatically by Jules for task 6932972257438310655 started by @Tugamer89

[google-labs-jules]

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud