Fix: go restful api tests (#17247)

internal/handler/memory.go

@@ -105,7 +105,7 @@ func (h *MemoryHandler) CreateMemory(c *gin.Context) {
 	}
 
 	// Validate required field: name
-	if req.Name == "" {
+	if strings.TrimSpace(req.Name) == "" {
 		common.ResponseWithCodeData(c, common.CodeArgumentError, nil, "name is required")
 		return
 	}
@@ -892,8 +892,10 @@ func isArgumentError(msg string) bool {
 	// Define list of argument error prefixes
 	// Matches Python ArgumentException error messages
 	argumentErrorPrefixes := []string{
-		"memory name cannot be empty",  // Memory name cannot be empty
+		"memory name cannot be empty",  // Python: "Memory name cannot be empty or whitespace."
+		"name cannot be empty",         // ValidateName trimmed-empty case
 		"memory name exceeds limit",    // Memory name exceeds limit
+		"name length is",               // ValidateName exceeds limit
 		"memory type must be a list",   // memory_type must be a list
 		"memory type is not supported", // Unsupported memory_type
 	}