Reset mview status on unsubscribe

This fixes a problem where mview gets "stuck" if interrupted, for example
during deployment.

Author: fredden

lib/internal/Magento/Framework/Mview/Test/Unit/ViewTest.php

@@ -244,6 +244,10 @@ public function testUnsubscribe()
             ->method('setMode')
             ->with(StateInterface::MODE_DISABLED)
             ->will($this->returnSelf());
+            $this->stateMock->expects($this->once())
+                ->method('setStatus')
+                ->with(StateInterface::STATUS_IDLE)
+                ->will($this->returnSelf());
         $this->changelogMock->expects($this->once())
             ->method('drop');
         $subscriptionMock = $this->createPartialMock(Subscription::class, ['remove']);
@@ -271,6 +275,8 @@ public function testUnsubscribeDisabled()
             ->method('setVersionId');
         $this->stateMock->expects($this->never())
             ->method('setMode');
+        $this->stateMock->expects($this->never())
+            ->method('setStatus');
         $this->changelogMock->expects($this->never())
             ->method('drop');
         $this->subscriptionFactoryMock->expects($this->never())

lib/internal/Magento/Framework/Mview/View.php

@@ -235,7 +235,10 @@ public function unsubscribe()
             }
 
             // Update view state
-            $this->getState()->setMode(View\StateInterface::MODE_DISABLED)->save();
+            $this->getState()
+                ->setMode(View\StateInterface::MODE_DISABLED)
+                ->setStatus(View\StateInterface::STATUS_IDLE)
+                ->save();
         }
 
         return $this;