v85.0.0

• Updated EuiThemeProvider to set an Emotion theme context that returns the values of useEuiTheme() (#6913)
• Added size prop to EuiStepsHorizontal, defaulting to the previous size of m (#6928)
• Added new s sizing to EuiStepsHorizontal (#6928)
• Added at and key icon glyphs. (#6934)
• Added a new cloneElementWithCss Emotion utility (#6939)
• Updated EuiPopover to allow consumer control of all focusTrapProps (#6955)

Bug fixes

• Fixed EuiDataGrid height calculation bug when browser zoom levels are not 100% (#6895)
• Fixed EuiTab not correctly passing selection color state to prepend and append children (#6938)
• Fixed EuiInputPopover to allow consumer control of its focus trap via focusTrapProps (#6955)

Breaking changes

• EuiProvider will no longer render multiple or duplicate nested instances of itself. If a nested EuiProvider is detected, that instance will return early without further processing, and will warn if configured to do so via setEuiDevProviderWarning. For nested theming, use EuiThemeProvider instead. (#6949)
• Removed onTrapDeactivation prop from EuiPopover. Use focusTrapProps.onDeactivation instead (#6955)

CSS-in-JS conversions

• Converted EuiFilterGroup and EuiFilterButton to Emotion; Removed styles attached to .euiFilterGroup__popoverPanel (#6957)