To make the sweet chili dipping sauce: In a saucepan over medium heat, add the water, rice vinegar, ketchup, sugar, sambal oelek, and garlic. Bring to a simmer. Mix the cornstarch with 3 tablespoons of water to make a slurry, then stir it into the sauce. Continue stirring until thickened. Set aside.
To make the filling: In a mixing bowl, add the cream cheese spread, crab sticks, scallions, soy sauce, sugar, and white pepper. Mix until evenly combined.
To assemble the Crab Rangoon: Lightly wet the edges of a wonton wrapper with water, then add about 1½ teaspoons of filling to the center. Bring two opposite corners together, then bring up the remaining two corners. Press the edges firmly together to seal and form a four-pointed star. Repeat with the remaining wrappers and filling.
To fry the Crab Rangoon: In a large pot, heat the cooking oil to 325°F (163°C). Working in batches, fry the Crab Rangoon for about 3–4 minutes, turning occasionally, until golden and crispy. Remove and drain on a paper towel-lined plate.
To serve: Serve the Crab Rangoon warm with the sweet chili dipping sauce on the side.