Handle edge cases in notifications

**Description**
Currently components lacks proper timeout support.

**Proposed solution**
Add configurable timeout with sensible defaults.

**Priority**: Low/Medium

Start by locating the notification components and any existing timeout or scheduling logic in the repository. Determine the current notification lifecycle and identify the edge cases that need coverage; the work is done when configurable timeouts use sensible defaults and the related behavior is verified.

Written by the indexing model from the issue text.