Trying to fix by setting as expected

Co-authored-by: Copilot <copilot@github.com>

Author: thiswasdumb

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/SpringCodegen.java

@@ -430,6 +430,26 @@ public void processOpts() {
             documentationProvider = DocumentationProvider.NONE;
             annotationLibrary = AnnotationLibrary.NONE;
             useJakartaEe = true;
+            if (!additionalProperties.containsKey(USE_BEANVALIDATION)) {
+                useBeanValidation = false;
+            } else {
+                Object beanValidationValue = additionalProperties.get(USE_BEANVALIDATION);
+                if (beanValidationValue instanceof Boolean) {
+                    useBeanValidation = (Boolean) beanValidationValue;
+                } else if (beanValidationValue instanceof String) {
+                    useBeanValidation = Boolean.parseBoolean((String) beanValidationValue);
+                }
+            }
+            if (!additionalProperties.containsKey(PERFORM_BEANVALIDATION)) {
+                performBeanValidation = false;
+            } else {
+                Object performBeanValidationValue = additionalProperties.get(PERFORM_BEANVALIDATION);
+                if (performBeanValidationValue instanceof Boolean) {
+                    performBeanValidation = (Boolean) performBeanValidationValue;
+                } else if (performBeanValidationValue instanceof String) {
+                    performBeanValidation = Boolean.parseBoolean((String) performBeanValidationValue);
+                }
+            }
 
             additionalProperties.put(USE_JAKARTA_EE, useJakartaEe);
             additionalProperties.put(USE_BEANVALIDATION, useBeanValidation);