Kolache with Blueberry Filling

Name: Kolache with Blueberry Filling
Ingredients: One 1/4-ounce active dry yeast; 1 cup milk, warmed to 110°; 3 large eggs; 1/4 cup granulated sugar; 2 teaspoons kosher salt; 1 stick unsalted butter, thinly sliced and slightly softened; 4 cups bread flour, plus more for dusting; Nonstick cooking spray; 2 tablespoons granulated sugar; 1/2 teaspoon cornstarch; 1/4 teaspoon ground cinnamon; 1 cup fresh blueberries; 1 tablespoon fresh orange juice; 1/2 cup granulated sugar; 1/4 cup all-purpose flour; 1/8 teaspoon kosher salt; 2 tablespoon unsalted butter, melted