[scanner] 🐛 fix: repair ClusterCardList test selectors for refresh button

The ActionTooltipWrapper span carries role="button" (added in PR #19270),
which caused getByRole('button', { name: /common\.refresh/i }) to match
both the wrapper span and the inner <button> — throwing "Found multiple
elements". Fix mirrors the pattern already used in ClusterCardFull.test.tsx:
use getAllByRole(...).find(el => el.tagName === 'BUTTON')! to target the
actual <button> element.

Signed-off-by: hive-scanner <hive-scanner@kubestellar.io>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: clubanderson

web/src/components/clusters/components/__tests__/ClusterCardList.test.tsx

@@ -99,7 +99,7 @@ describe('ClusterCardList', () => {
   it('calls onRefreshCluster when refresh button is clicked', () => {
     const onRefreshCluster = vi.fn()
     render(<ClusterCardList {...defaultProps} onRefreshCluster={onRefreshCluster} />)
-    const refreshButton = screen.getByRole('button', { name: /common\.refresh/i })
+    const refreshButton = screen.getAllByRole('button', { name: /common\.refresh/i }).find(el => el.tagName === 'BUTTON')!
     fireEvent.click(refreshButton)
     expect(onRefreshCluster).toHaveBeenCalledTimes(1)
   })
@@ -108,7 +108,7 @@ describe('ClusterCardList', () => {
     const cluster = createMockCluster({ healthy: false, reachable: false })
     const onRefreshCluster = vi.fn()
     render(<ClusterCardList {...defaultProps} cluster={cluster} onRefreshCluster={onRefreshCluster} />)
-    const refreshButton = screen.getByRole('button', { name: /cluster\.controlsDisabledOffline/i })
+    const refreshButton = screen.getAllByRole('button', { name: /cluster\.controlsDisabledOffline/i }).find(el => el.tagName === 'BUTTON')!
     expect(refreshButton).toBeDisabled()
   })