[Security:Rules:Benchmarks]Activated buttons missing state change announcement

Description Buttons which has a state, like collapsed, expanded, sorting descended... - has to have an announcement when they are activated (their state changes). For users using assistive technology to understand that corresponding action did happen.

Preconditions Security -> Rules -> Benchmarks page. Any benchmark is selected from the table (Enter is pressed on it). Use Screen Reader (VoiceOver).

Steps to reproduce

1.Navigate to CIS Section or Rule Number. 2.Observe screen reader. 3.Press Enter. 4.Observe screen reader.

UI elements + VoiceOver

Actual Result

• When collapsed button is expanded, no announcement is made for it.

Expected Result

• State change, in this case "expanded", is announced for the user when activating the button.

Meta Issue

Version: 9.1.0

OS: macOS Sequoia

Browser: Safari Version 18.5

Screen reader: VoiceOver

WCAG or Vendor Guidance (optional)

• Understanding SC 4.1.2: Name, Role, Value (Level A)(https://www.w3.org/WAI/WCAG22/Understanding/name-role-value.html)
• Understanding SC 1.3.1: Info and Relationships (Level A)(https://www.w3.org/WAI/WCAG22/Understanding/info-and-relationships.html)

Related to: https://github.com/elastic/kibana-team/issues/1773