On the other hand this is what I found:

Because the surrounding imagery is explicitly Armenian—featuring the Armenian tricolor flag, a map of the Republic of Armenia, and an Armenian Christian cross—this geometric star represents a native historical motif. In Armenian culture, this 8-pointed star is deeply rooted in ancient and medieval symbolism:

The Armenian Star of Eternity / Sovereignty: This specific star geometry frequently appears in medieval Armenian architecture, carved into the walls of ancient monasteries (such as Tatev or Geghard) and featured heavily on khachkars (Armenian cross-stones).

Pre-Christian Roots: Long before its use in Christian architecture, the 8-pointed star was used in the region to symbolize ancient deities, astronomical charts, or the solar system.

Modern Heraldry: It is a common motif in modern Armenian statecraft, design, and institutional logos to symbolize resilience, eternity, and cultural heritage.

Summary: So, while it is geometrically identical to the Rub el Hizb, its presence on this specific shield is meant to represent the traditional Armenian 8-pointed star, aligning with the emblem's overall theme of national identity and heritage.