fix: Fix rows counter in the Edit Grade modal window (olive branch) (#311)

* fix: Fix rows counter in the Edit Grade modal window

* fix: Update tests

src/components/GradesView/EditModal/OverrideTable/__snapshots__/test.jsx.snap

@@ -59,6 +59,6 @@ exports[`OverrideTable Component snapshots basic snapshot shows a row for each e
       },
     ]
   }
-  itemCount={2}
+  itemCount={3}
 />
 `;

src/components/GradesView/EditModal/OverrideTable/index.jsx

@@ -26,6 +26,16 @@ export const OverrideTable = ({
   if (hide) {
     return null;
   }
+
+  const tableData = [
+    ...gradeOverrides,
+    {
+      adjustedGrade: <AdjustedGradeInput />,
+      date: todaysDate,
+      reason: <ReasonInput />,
+    },
+  ];
+
   return (
     <DataTable
       columns={[
@@ -37,15 +47,8 @@ export const OverrideTable = ({
           accessor: columns.adjustedGrade,
         },
       ]}
-      data={[
-        ...gradeOverrides,
-        {
-          adjustedGrade: <AdjustedGradeInput />,
-          date: todaysDate,
-          reason: <ReasonInput />,
-        },
-      ]}
-      itemCount={gradeOverrides.length}
+      data={tableData}
+      itemCount={tableData.length}
     />
   );
 };