DOC-2463: Attempting to use focus commands on an editor where the cursor had last been in certain `contentEditable="true"` elements would fail.

[kemister85]

Ticket: DOC-2463

Site: Staging branch

Changes:

• add fix documentation for TINY-11085

Pre-checks:

• [x] Branch prefixed with feature/<version>/, hotfix/<version>/, staging/<version>/, or release/<version>/.
• [x] modules/ROOT/nav.adoc has been updated (if applicable).
• [x] Included a release note entry for any New product features.
• [x] If this is a minor release, updated productminorversion in antora.yml and added new supported versions entry in modules/ROOT/partials/misc/supported-versions.adoc.

Review:

• [x] Documentation Team Lead has reviewed