[INTERNAL] lib/processors/jsdoc: Simplify base type handling (fixup)

This change is a follow-up to the previous commit, which introduced
a new, simplified way to handle base types in JSDoc.

Cherry-picked from UI5/openui5@e419b0223.

Author: codeworrior

lib/processors/jsdoc/lib/transformApiJson.js

@@ -136,17 +136,17 @@ function transformer(sInputFile, sOutputFile, sLibraryFile, vDependencyAPIFiles,
 				return true;
 			}
 
-			// Handle array notation directly
-			if (type.endsWith("[]")) {
-				return builtInTypes.includes(type.slice(0, -2));
-			}
-
 			// Check if the type is a union type
 			if (type.includes("|")) {
 				const unionParts = type.split("|").map(part => part.trim());
 				return unionParts.every(part => isBuiltInType(part));
 			}
 
+			// Handle array notation directly
+			if (type.endsWith("[]")) {
+				return builtInTypes.includes(type.slice(0, -2));
+			}
+
 			// Predefined regex patterns for reuse
 			const arrayRegex = /Array<(.+)>/;
 			const arrayDotRegex = /Array\.<(.+)>/;