ACP2E-2850: fix static unit errors

Author: alzota

app/code/Magento/CheckoutAgreements/Test/Unit/Model/Checkout/Plugin/GuestValidationTest.php

@@ -231,7 +231,7 @@ private function getPaymentExtension(): MockObject
         $mockBuilder = $this->getMockBuilder(PaymentExtensionInterface::class)
             ->disableOriginalConstructor();
         try {
-            $mockBuilder->onlyMethods(['getAgreementIds', 'setAgreementIds']);
+            $mockBuilder->addMethods(['getAgreementIds', 'setAgreementIds']);
         } catch (RuntimeException $e) {
             // Payment extension already generated.
         }

app/code/Magento/CheckoutAgreements/Test/Unit/Model/Checkout/Plugin/ValidationTest.php

@@ -234,7 +234,7 @@ private function getPaymentExtension(): MockObject
         $mockBuilder = $this->getMockBuilder(PaymentExtensionInterface::class)
             ->disableOriginalConstructor();
         try {
-            $mockBuilder->onlyMethods(['getAgreementIds', 'setAgreementIds']);
+            $mockBuilder->addMethods(['getAgreementIds', 'setAgreementIds']);
         } catch (RuntimeException $e) {
             // Payment extension already generated.
         }

app/code/Magento/CheckoutAgreements/Test/Unit/Model/EmulateStoreTest.php

@@ -80,7 +80,7 @@ public function testExecute(int $storeId, int $currentStoreId): void
                 });
         }
 
-        $this->emulateStore->execute($storeId, function () use ($currentStoreId) {
+        $this->emulateStore->execute($storeId, function () {
         }, [1, 2, 3]);
     }