fix: graphUpdate function in history class

[BisonJeedom]

Description

Graphs don't updates while open
Fix graphUpdate function in history class

Suggested changelog entry

fix graphUpdate function in history class

Related issues/external references

https://community.jeedom.com/t/les-graphiques-se-mettent-a-jour-automatiquement-lors-de-l-arrivee-de-nouvelles-valeurs-ko/146033/4?u=bison

Types of changes

• Bug fix (non-breaking change which fixes)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
  • This change is only breaking for integrators, not for external standards or end-users.
• Documentation improvement

PR checklist

• I have checked there is no other PR open for the same change.
• I have read the [La ligne directrice pour contribuer à ce projet / Contribution guidelines for this project).
• I grant the project the right to include and distribute the code under the GNU.
• I have added tests to cover my changes.
• I have verified that the code complies with the projects coding standards.
• [Required for new sniffs] I have added MD documentation for the sniff.

[Salvialf]

fix 437ab65