Minor improvements and fixes

[tamasmak]

• Fixes NPE by throwing AppSecException if npm SBOM file doesn't exist.
• Fixes the risk score filter label.
• Fixes highest CVSS score string calculation.
• Removes the @PreserveOnRefresh annotation.
• Removes the Filter button and changes the filters to do the filtering immediately after selection.
• Makes the Scan now button to be the primary active on the page.
• Increases the filter overlay width for the Dependency and Dependency group columns.
• Adds debug message when a scan event listener is added.
• Adds the exec-maven-plugin to the AppSec Kit Demo Vaadin 24 Spring application's pom.xml to generate the npm SBOM file during the mvn install instead of the npm install.
  • Removes npm SBOM generartion from package.json.
  • Updates the README for the demo application.

[tamasmak]

There were two more commits. Those changes the filtering, removes the filter button, removes the @PreserveOnRefresh annotation and makes the Scan now button to be primarily active on the page.