[Search:BehavioralAnalytics:Integration page]When generating API key, button behind dialog modal is announced

[L1nBra]

Description Elements which are behind dialogs shouldn't be announced as not to confuse users, especially the ones using assistive technology.

Preconditions Stateful Behavioral Analytics -> Integration page is opened. Collection is added.

Steps to reproduce

1.Using only keyboard navigate to Create API Key button by pressing Tab key. 2.Press Enter. 3.Navigate to Generate Key button. 4.Press Enter. 5.Observe screen reader.

NVDA Speech Viewer + UI elements

Actual Result

• Create API Key button is announced. No announcement about successful generation.

Expected Result

• Create API key button is not announced (because it is behind the dialog). Announcement about successful API key generation is made.

Meta Issue

Kibana Version: 8.17.0-SNAPSHOT

OS: Windows 11 Pro

Browser: Chrome Version 130.0.6723.70 (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 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)