DOCS-3057: Add a component for feature lifecycle notices - #3052

[vale] reported by reviewdog 🐶 [Vale.Terms] Use 'WAF' instead of 'waf'. Raw Output: {"message":"[Vale.Terms] Use 'WAF' instead of 'waf'.","location":{"path":"calico-enterprise/threat/gateway-waf/overview.mdx","range":{"start":{"line":5,"column":23},"end":{"line":5,"column":26}}},"severity":"WARNING","code":{"value":"Vale.Terms"}}

[vale] reported by reviewdog 🐶 [Vale.Terms] Use 'WAF' instead of 'waf'. Raw Output: {"message":"[Vale.Terms] Use 'WAF' instead of 'waf'.","location":{"path":"calico-enterprise/threat/gateway-waf/overview.mdx","range":{"start":{"line":5,"column":23},"end":{"line":5,"column":26}}},"severity":"WARNING","code":{"value":"Vale.Terms"}}

"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"