GitGraph: Branch names not displayed when rendering examples from official documentation

[nour0205]

Description

Hello Mermaid team 👋,

While testing the examples from the official GitGraph documentation, I noticed that branch names are missing in the rendered diagrams.

According to the documentation, branch names should be displayed by default when a branch is created.
However, when copying and running the provided examples, no branch names appear on the diagrams.

This issue seems to affect all gitGraph diagrams, even with very basic scripts.

Steps to reproduce

    gitGraph
       commit
       commit
       branch develop
       commit
       commit
       commit

Screenshots

The diagram shows the commit nodes and lines, but no "develop" branch label appears.

expected

Code Sample

Setup

Mermaid.js Version: v11.4.1
Browser and Version:Microsoft Edge v132.0.2957.115
OS: Windows 11

Suggested Solutions

No response

Additional Context

This problem might be related to these issues :
#6536
#6535

I will try to investigate these issues further please let me know if you have any suggestions or inquiries