chore(form-core): suppress eslint false positives for optional chaining

Author: Kyujenius

packages/form-core/src/FormApi.ts

@@ -1093,6 +1093,7 @@ export class FormApi<
           const isFieldPristine = !currBaseMeta.isDirty
           const isDefaultValue = evaluate(
             curFieldVal,
+            // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
             this.getFieldInfo(fieldName)?.instance?.options.defaultValue ??
               getBy(this.options.defaultValues, fieldName),
           )
@@ -2557,6 +2558,7 @@ export class FormApi<
   resetField = <TField extends DeepKeys<TFormData>>(field: TField) => {
     this.baseStore.setState((prev) => {
       const fieldDefault =
+        // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
         this.getFieldInfo(field)?.instance?.options.defaultValue
       const formDefault = getBy(this.options.defaultValues, field)
       const targetValue = fieldDefault ?? formDefault