[SecuritySolution] Update dashboard selection count (elastic#241326)

## Summary

Fixes elastic#240407

### Checklist

- [x] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios

---------

Co-authored-by: kibanamachine <[email protected]>
(cherry picked from commit 5ef9b2c)

Author: angorayc

x-pack/solutions/security/plugins/security_solution/public/siem_migrations/common/components/bulk_actions/install_translated.test.tsx

@@ -9,6 +9,7 @@ import React from 'react';
 import { render, fireEvent } from '@testing-library/react';
 import { InstallTranslatedButton } from './install_translated';
 import { getDashboardMigrationDashboardMock } from '../../../../../common/siem_migrations/model/__mocks__';
+import type { BulkActionsItem } from './types';
 
 describe('InstallTranslatedButton', () => {
   const mockInstallTranslatedItems = jest.fn();
@@ -29,6 +30,20 @@ describe('InstallTranslatedButton', () => {
   });
 
   it('renders the button with correct text when items are selected', () => {
+    const additionalItem = {
+      ...getDashboardMigrationDashboardMock(),
+      id: 'EfDKfJkBBI4hy8QbQ_BC',
+      migration_id: '9bcd7ea8-f617-4dc4-ab4a-da323c0a18b3',
+      translation_result: 'full',
+    } as BulkActionsItem;
+    const selectedItems: BulkActionsItem[] = [getDashboardMigrationDashboardMock(), additionalItem];
+    const { getByText } = render(
+      <InstallTranslatedButton {...defaultProps} selectedItems={selectedItems} />
+    );
+    expect(getByText('Install selected (2)')).toBeInTheDocument();
+  });
+
+  it('renders the button with correct text when partially translated items are selected', () => {
     const selectedItems = [getDashboardMigrationDashboardMock()];
     const { getByText } = render(
       <InstallTranslatedButton {...defaultProps} selectedItems={selectedItems} />

x-pack/solutions/security/plugins/security_solution/public/siem_migrations/common/components/bulk_actions/install_translated.tsx

@@ -32,8 +32,11 @@ export const InstallTranslatedButton = memo(
     const numberOfSelectedItems = selectedItems.length;
     const installTranslatedItemsSelected = useMemo(
       () =>
-        selectedItems.filter((item) => item.translation_result === MigrationTranslationResult.FULL)
-          .length,
+        selectedItems.filter(
+          (item) =>
+            item.translation_result === MigrationTranslationResult.FULL ||
+            item.translation_result === MigrationTranslationResult.PARTIAL
+        ).length,
       [selectedItems]
     );
     const isSelected = installTranslatedItemsSelected > 0;