ENGCOM-4523: Fixed : Additional addresses DataTable Pagination count displaying wrong #21399

 - Merge Pull Request #21399 from Dharmeshvaja91/magento2:fixed-issue-21396
 - Merged commits:
   1. f1e2fff
   2. 8a872be
   3. 69aac2c
   4. 7320e1b
   5. 0fcf041
   6. 3ccc867
   7. 5552b3e
   8. dcff5d1
   9. 0ab0e03
   10. 6584286
   11. c39751f
   12. 7127e16
   13. be076d5
   14. 2f42295
   15. fa9b420

Author: magento-engcom-team

app/code/Magento/Customer/Block/Address/Grid.php

@@ -236,8 +236,9 @@ private function getAddressCollection(): \Magento\Customer\Model\ResourceModel\A
             }
             /** @var \Magento\Customer\Model\ResourceModel\Address\Collection $collection */
             $collection = $this->addressCollectionFactory->create();
-            $collection->setOrder('entity_id', 'desc')
-                ->setCustomerFilter([$this->getCustomer()->getId()]);
+            $collection->setOrder('entity_id', 'desc');
+            $collection->addFieldToFilter('entity_id', array('nin' => array($this->getDefaultBilling(), $this->getDefaultShipping())));
+            $collection->setCustomerFilter([$this->getCustomer()->getId()]);
             $this->addressCollection = $collection;
         }
         return $this->addressCollection;

app/code/Magento/Customer/Test/Unit/Block/Address/GridTest.php

@@ -81,7 +81,7 @@ protected function setUp()
     public function testGetChildHtml()
     {
         $customerId = 1;
-
+        $outputString = 'OutputString';
         /** @var \Magento\Framework\View\Element\BlockInterface|\PHPUnit_Framework_MockObject_MockObject $block */
         $block = $this->getMockBuilder(\Magento\Framework\View\Element\BlockInterface::class)
             ->setMethods(['setCollection'])
@@ -93,7 +93,7 @@ public function testGetChildHtml()
         /** @var \PHPUnit_Framework_MockObject_MockObject */
         $addressCollection = $this->getMockBuilder(\Magento\Customer\Model\ResourceModel\Address\Collection::class)
             ->disableOriginalConstructor()
-            ->setMethods(['setOrder', 'setCustomerFilter', 'load'])
+            ->setMethods(['setOrder', 'setCustomerFilter', 'load','addFieldToFilter'])
             ->getMock();
 
         $layout->expects($this->atLeastOnce())->method('getChildName')->with('NameInLayout', 'pager')
@@ -108,12 +108,13 @@ public function testGetChildHtml()
             ->willReturnSelf();
         $addressCollection->expects($this->atLeastOnce())->method('setCustomerFilter')->with([$customerId])
             ->willReturnSelf();
+        $addressCollection->expects(static::any())->method('addFieldToFilter')->willReturnSelf();
         $this->addressCollectionFactory->expects($this->atLeastOnce())->method('create')
             ->willReturn($addressCollection);
         $block->expects($this->atLeastOnce())->method('setCollection')->with($addressCollection)->willReturnSelf();
         $this->gridBlock->setNameInLayout('NameInLayout');
         $this->gridBlock->setLayout($layout);
-        $this->assertEquals('OutputString', $this->gridBlock->getChildHtml('pager'));
+        $this->assertEquals($outputString, $this->gridBlock->getChildHtml('pager'));
     }
 
     /**
@@ -137,7 +138,7 @@ public function testGetAdditionalAddresses()
         /** @var \PHPUnit_Framework_MockObject_MockObject */
         $addressCollection = $this->getMockBuilder(\Magento\Customer\Model\ResourceModel\Address\Collection::class)
             ->disableOriginalConstructor()
-            ->setMethods(['setOrder', 'setCustomerFilter', 'load', 'getIterator'])
+            ->setMethods(['setOrder', 'setCustomerFilter', 'load', 'getIterator','addFieldToFilter'])
             ->getMock();
         $addressDataModel = $this->getMockForAbstractClass(\Magento\Customer\Api\Data\AddressInterface::class);
         $address = $this->getMockBuilder(\Magento\Customer\Model\Address::class)
@@ -157,6 +158,7 @@ public function testGetAdditionalAddresses()
             ->willReturnSelf();
         $addressCollection->expects($this->atLeastOnce())->method('setCustomerFilter')->with([$customerId])
             ->willReturnSelf();
+        $addressCollection->expects(static::any())->method('addFieldToFilter')->willReturnSelf();
         $addressCollection->expects($this->atLeastOnce())->method('getIterator')
             ->willReturn(new \ArrayIterator($collection));
         $this->addressCollectionFactory->expects($this->atLeastOnce())->method('create')