fix(sc-event): replay status-change events after a downtime ends

[sdepassio]

Description

When a status change during a downtime, the event is never sent to the stream connector.
Fix: the last status event is stored, and if at the end of the downtime the status has changed the event is sent.

Fixes CTOR-2043

Type of change

• Patch fixing an issue (non-breaking change)
• New functionality (non-breaking change)
• Breaking change (patch or feature) that might cause side effects breaking part of the Software

Checklist

Community contributors & Centreon team

• I have followed the coding style guidelines provided by Centreon
• I have commented my code, especially new classes, functions or any legacy code modified. (docblock)
• I have commented my code, especially hard-to-understand areas of the PR.
• I have rebased my development branch on the base branch (master, maintenance).