[Stateful:Indices:Pipelines page] Duplicate announcement of elements

[L1nBra]

Description Elements should be announced one time for the user. Not only when the user reaches it directly while navigating through elements but also after closing any pop up, dialog and element which invoked pop up, dialog gets in focus.

Preconditions Stateful Indices -> Pipelines page is opened. Use Screen Reader (NVDA).

Steps to reproduce

1.Navigate to Manage button using only keyboard by pressing Tab key in Ingest Pipelines section. 2.Press Enter. 3.Press Esc. 4.Observe screen reader announcement.

NVDA Speech Viewer + UI elements

Actual Result

• Element is announced two times.

Expected Result

• Element should be announced only one time.

Notes: Same behavior with:

• Press Enter on Manage button -> Press Tab -> Press Enter ->Press Tab. Result: Delete custom pipeline dialog opens and it's information is announced together with "button Closes this modal window". After Tab - focus is on close button and again user hears announcement of element.

• After pressing Enter on Settings.

• Press Enter on Settings -> Navigate to x (close) button on dialog -> Press Enter.

• Press Enter on Add inference Pipeline button -> Navigate to x (close) button on dialog -> Press Enter.

• Press Enter on Add Inference Pipeline button -> Navigate through steps with Tab key.

Meta Issue

Kibana Version: 8.16.0-SNAPSHOT

OS: Windows 11 Pro

Browser: Chrome Version 129.0.6668.101 (Official Build) (64-bit)

Screen reader: NVDA

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)

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

[elasticmachine]

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