Summary: In the behavior group wizard, on the “Associate event types” step, users can filter event types by severity and see each event type’s severity in the table.

Acceptance criteria:

• A Severity filter is available in the Associate event types toolbar
• Severity Column in table
  • Column shows the value (CRITICAL, IMPORTANT, MODERATE, LOW, NONE, UNDEFINED).
  • Severity is shown with a consistent visual (label) and matches the design system https://www.patternfly.org/patterns/status-and-severity/#severity-icons
    https://www.patternfly.org/components/label#filled-labels
  • When the API omits severity, the cell shows a defined fallback (e.g. “—” + “Undefined”) and does not break the table.

• Loading and error states for the Associate event types step remain correct when severity filter/column are present.
• Accessible (labels, keyboard, screen readers) and localized where applicable.
• Add storybook test