[Stateful: Indices page] Wrong navigation sequence after Reset or Save Default Settings

[L1nBra]

Description Navigation should be clear and in sequence for the user to easily understand how to navigate on the webpage.

Preconditions Stateful Indices page is opened. At least one index is added. Use Screen Reader (NVDA).

Steps to reproduce

1.Navigate to Default settings button while using only keyboard by pressing Tab key. 2.Press Enter. 3.Navigate to any switch button inside the dialog window (f.e.: Content extraction switch). 4.Press Enter key on switch button 5.Navigate to Reset button while pressing Tab key. 6.Press Enter. 8.Observe page and Screen Reader announcement.

UI elements

NVDA Speech Viewer

Actual Result

• After pressing Enter on Reset button, Screen Reader announces Default settings button, which is under the dialog window (on the main Indices page); no focus visible on any element; no announcement for the user that Reset was performed. Same behavior after pressing Enter key on Save button.

Expected Result

• Focus shouldn't move outside of Default settings dialog. It should either a) be visible on the first element in the dialog window (close button or ingest pipelines link) or b) if after pressing Enter key on Reset button dialog window should close, then dialog closes and focus is visible on Default settings button. and user should be informed about the Reset being performed.

Meta Issue

Kibana Version: 8.16.0-SNAPSHOT

OS: Windows 11 Pro

Browser: Chrome Version 129.0.6668.70 (Official Build) (64-bit)

Screen reader: NVDA

WCAG or Vendor Guidance (optional)

• Understanding SC 2.4.3: Focus Order (Level A)(https://www.w3.org/WAI/WCAG22/Understanding/focus-order.html)
• Understanding SC 4.1.3: Status Messages (Level AA)(https://www.w3.org/WAI/WCAG22/Understanding/status-messages.html)

Related to: https://github.com/elastic/search-team/issues/8256

[elasticmachine]

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

[L1nBra]

Similar to issue #195366 , only in this dialog additional content doesn't appear.