Fix comparison table test (#4481)

Author: julieg18

webview/src/plots/components/comparisonTable/ComparisonTable.test.tsx

@@ -258,7 +258,20 @@ describe('ComparisonTable', () => {
     ] as Revision[]
 
     renderTable(
-      { ...comparisonTableFixture, revisions: newRevisions },
+      {
+        ...comparisonTableFixture,
+        plots: comparisonTableFixture.plots.map(plot => ({
+          ...plot,
+          revisions: {
+            ...plot.revisions,
+            [newRevName]: {
+              id: newRevName,
+              imgs: [{ errors: undefined, loading: false, url: undefined }]
+            }
+          }
+        })),
+        revisions: newRevisions
+      },
       rerender
     )
     const headers = getHeaders().map(header => header.textContent)

webview/src/plots/components/comparisonTable/ComparisonTableRows.tsx

@@ -54,9 +54,7 @@ export const ComparisionTableRows: React.FC<ComparisonTableRowsProps> = ({
           path={path}
           plots={columns.map(column => ({
             id: column.id,
-            imgs: revs[column.id]?.imgs || [
-              { errors: undefined, loading: false, url: undefined }
-            ]
+            imgs: revs[column.id]?.imgs
           }))}
           nbColumns={columns.length}
           pinnedColumn={pinnedColumn}