[Stateful:Indices:Pipelines page] Inaccessible clear buttons with keyboard

[L1nBra]

Description
Buttons which gets activate by clicking them with the mouse, should behave the same when activating them with keyboard only.

Preconditions
Stateful Indices -> Pipelines page is opened.
Add an inference pipeline step 1 is filled.

Steps to reproduce

1.Navigate to Add an inference pipeline step 2 while using only keyboard by pressing Tab key.
2.Navigate to Source text field.
3.Enter any text (f.e.: test).
4.Press Tab key (focus is on Cancel button).
5.Pressing Shift + Tab key navigate back to source field.
6.Navigate to x (clear buttons) in this field.
7.Press Enter on x (clear) button.

Gif showing issue

UI elements

Actual Result

• After entering text in Source field and pressing Enter - focus is on Cancel button.
  When navigating back to the Source field, to clear buttons - they do get focus but when pressing Enter, the field does not become empty.

Expected Result

• Focus should go to the next element - clear button in the Source text field.
  When pressing Enter on clear buttons, text from the Source text field should be deleted.

Notes:
It is possible to click on clear buttons with the mouse - text from field is deleted.

Meta Issue

Kibana Version: 8.16.0-SNAPSHOT

OS: Windows 11 Pro

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

WCAG or Vendor Guidance (optional)

• Understanding SC 2.1.1: Keyboard (Level A)(https://www.w3.org/WAI/WCAG22/Understanding/keyboard.html)

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

[elasticmachine]

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

[L1nBra]

Same behavior observed on

• Indices -> Index mapping page, Edit field dialog

UI elements