fix(core): validate amount_to_capture in payment update (#3830)

Author: hrithikesh026

crates/router/src/core/payments/helpers.rs

@@ -677,8 +677,11 @@ pub fn validate_amount_to_capture_and_capture_method(
             .unwrap_or(0);
         let total_capturable_amount =
             original_amount.map(|original_amount| original_amount + surcharge_amount);
+        let amount_to_capture = request
+            .amount_to_capture
+            .or(payment_attempt.and_then(|pa| pa.amount_to_capture));
         if let Some((total_capturable_amount, amount_to_capture)) =
-            total_capturable_amount.zip(request.amount_to_capture)
+            total_capturable_amount.zip(amount_to_capture)
         {
             utils::when(amount_to_capture != total_capturable_amount, || {
                 Err(report!(errors::ApiErrorResponse::PreconditionFailed {

postman/collection-dir/stripe/Flow Testcases/Happy Cases/Scenario23- Update Amount/Payments - Update/request.json

@@ -18,7 +18,8 @@
       }
     },
     "raw_json_formatted": {
-      "amount": 1000
+      "amount": 1000,
+      "amount_to_capture": 1000
     }
   },
   "url": {