[EuiCollapsedNavButton][a11y] Update aria-label for enhanced screen reader navigation

[alexwizp]

Closes: https://github.com/elastic/security-team/issues/8947

Summary

The Security icon popover announces "Security, button", then "Security, description" to screen readers. This is caused by the aria-label and tooltip aria-describedby text being the same. Screen reader users do not have context that this will open the Security Solution quick navigation popover (with just the top-level links). We can improve this by updating the information in the EUI Tooltip content prop. Screenshot and linked CodeSandbox below.

What was changed?:

1. aria-label attribute was updated

Screen:

General checklist

• Browser QA
  • Checked in both light and dark modes
  • Checked in mobile
  • Checked in Chrome, Safari, Edge, and Firefox
  • Checked for accessibility including keyboard-only and screenreader modes
• Docs site QA
  • Added documentation
  • Props have proper autodocs (using @default if default values are missing) and playground toggles
  • Checked Code Sandbox works for any docs examples
• Code quality checklist
  • Added or updated jest and cypress tests
• Release checklist
  • A changelog entry exists and is marked appropriately.
  • If applicable, added the breaking change issue label (and filled out the breaking change checklist)
• Designer checklist
  • Updated the Figma library counterpart

[cee-chen]

@1Copenut before I fix the snapshots, do you mind checking what the new punctuation experience is like on JAWS?

[alexwizp]

@cee-chen @1Copenut @mgadewoll Thanks, although we have already used the version with "" in other places in Kibana and cloud, I like the version with a comma too

[kibanamachine]

Preview staging links for this PR:

• Docs site: https://eui.elastic.co/pr_7740/
• Storybook: https://eui.elastic.co/pr_7740/storybook

[elasticmachine]

💚 Build Succeeded

• Buildkite Build
• Commit: 2757458

History

• 💔 Build #1905 failed 75eb08e
• 💚 Build #1904 succeeded be21e0c
• 💚 Build #1902 succeeded a00085d

[1Copenut]

@1Copenut before I fix the snapshots, do you mind checking what the new punctuation experience is like on JAWS?

The new experience is solid. I checked NVDA + Chrome and FF, and JAWS + Chrome. All three announced the name, short pause, then "quick navigation menu".

[cee-chen]

Thanks for the awesome contribution @alexwizp!