Migrate angle icon to chevron in vulnerabilities report

What does this MR do and why?

Migrates the angle icon to chevron in vulnerabilities report detail page.

Screenshots or screen recordings

	before	after
full page
effected area (collapsed)
effected area (expanded)

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #362785 (closed)