[Security:Assets:Endpoints:Event Filters page]Activating buttons do nothing

[L1nBra]

Description
When user activates buttons some change on the page should happen or new page, dialog/flyout should open. In case user has to fill something in order to be able to activate them, information about it should be presented for the user or at least buttons should be inactive.

Preconditions
Security -> Assets -> Endpoints -> Event Filters page.

Steps to reproduce

1.Navigate to Add Event Filter button.
2.Press Enter.
3.Navigate to AND button.
4.Press Enter.
5.Navigate to Add nested condition button.
6.Press Enter.
7.Observe the page.

Screen recording
https://github.com/user-attachments/assets/ad4d7a0f-ae60-426c-9ef4-fbe7e26a865d

UI elements

Actual Result

• When user press Enter or clicks on buttons - nothing happens.

Expected Result

• Corresponding action should happen or information, text should be presented visually and announced for the user if some conditions are not met for buttons to take action.

Notes:
When user fills row above these buttons and then press Enter on AND, Add nested condition - additional rows appear.

Meta Issue

Kibana Version: 8.17.0-SNAPSHOT

OS: Windows 11 Pro

Browser: Chrome Version 131.0.6778.140 (Official Build) (64-bit)

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 3.2.2: On Input (Level A)(https://www.w3.org/WAI/WCAG22/Understanding/on-input.html)

Related to: https://github.com/elastic/kibana-team/issues/1280

[elasticmachine]

Pinging @elastic/kibana-accessibility (Project:Accessibility)

[elasticmachine]

Pinging @elastic/security-solution (Team: SecuritySolution)