[Security:Assets:Fleet:View agent page]Incorrectly announced table

[L1nBra]

Description
Tables should be announced correctly for the user using assistive technology, that user would know what table it is, how many rows, columns it has.

Preconditions
Security -> Assets -> Fleet -> View agent page (reached clicking on host in the table from Fleet page), Diagnostics tab is opened.
Use Screen Reader (NVDA).

Steps to reproduce

1.Press T key on the page.
2.Observe table and screen reader.

UI elements + NVDA Speech Viewer

Actual Result

• One number of rows is announced following different number of rows: "table with 2 rows and 3 columns caption This table contains 0 rows."

Expected Result

• Correct number of rows is announced for the table (and instead of 0 rows in caption could be announced f.e.: "This table contains no data").

Meta Issue

Kibana Version: 8.17.0-SNAPSHOT

OS: Windows 11 Pro

Browser: Chrome Version 131.0.6778.140 (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/kibana-team/issues/1280

[elasticmachine]

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

[elasticmachine]

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