[Security Solution][Endpoint] Move Response Action's file download api to versioned router (#161272)

## Summary

- Moves the file download API of response actions to versioned router
(after getting support for this type of API via #160399 )

x-pack/plugins/security_solution/public/management/components/response_action_file_download_link/response_action_file_download_link.test.tsx

@@ -60,7 +60,11 @@ describe('When using the `ResponseActionFileDownloadLink` component', () => {
       expect(apiMocks.responseProvider.fileInfo).toHaveBeenCalled();
     });
 
-    expect(renderResult.getByTestId('test-downloadButton')).not.toBeNull();
+    const downlaodButton = renderResult.getByTestId('test-downloadButton');
+
+    expect(downlaodButton.getAttribute('href')).toEqual(
+      '/api/endpoint/action/123/file/123.agent-a/download?apiVersion=2023-10-31'
+    );
     expect(renderResult.getByTestId('test-passcodeMessage')).toHaveTextContent(
       FILE_PASSCODE_INFO_MESSAGE
     );

x-pack/plugins/security_solution/public/management/components/response_action_file_download_link/response_action_file_download_link.tsx

@@ -134,10 +134,10 @@ export const ResponseActionFileDownloadLink = memo<ResponseActionFileDownloadLin
     }, [action.isCompleted, action.wasSuccessful]);
 
     const downloadUrl: string = useMemo(() => {
-      return resolvePathVariables(ACTION_AGENT_FILE_DOWNLOAD_ROUTE, {
+      return `${resolvePathVariables(ACTION_AGENT_FILE_DOWNLOAD_ROUTE, {
         action_id: action.id,
         file_id: getFileDownloadId(action, agentId),
-      });
+      })}?apiVersion=2023-10-31`;
     }, [action, agentId]);
 
     const {

x-pack/plugins/security_solution/server/endpoint/routes/actions/file_download_handler.test.ts

@@ -50,7 +50,11 @@ describe('Response Actions file download API', () => {
 
     it('should register the route', () => {
       expect(
-        apiTestSetup.getRegisteredRouteHandler('get', ACTION_AGENT_FILE_DOWNLOAD_ROUTE)
+        apiTestSetup.getRegisteredVersionedRoute(
+          'get',
+          ACTION_AGENT_FILE_DOWNLOAD_ROUTE,
+          '2023-10-31'
+        )
       ).toBeDefined();
     });
 
@@ -59,11 +63,9 @@ describe('Response Actions file download API', () => {
         (await httpHandlerContextMock.securitySolution).getEndpointAuthz as jest.Mock
       ).mockResolvedValue(getEndpointAuthzInitialStateMock({ canWriteFileOperations: false }));
 
-      await apiTestSetup.getRegisteredRouteHandler('get', ACTION_AGENT_FILE_DOWNLOAD_ROUTE)(
-        httpHandlerContextMock,
-        httpRequestMock,
-        httpResponseMock
-      );
+      await apiTestSetup
+        .getRegisteredVersionedRoute('get', ACTION_AGENT_FILE_DOWNLOAD_ROUTE, '2023-10-31')
+        .routeHandler(httpHandlerContextMock, httpRequestMock, httpResponseMock);
 
       expect(httpResponseMock.forbidden).toHaveBeenCalledWith({
         body: expect.any(EndpointAuthorizationError),

x-pack/plugins/security_solution/server/endpoint/routes/actions/file_download_handler.ts

@@ -25,22 +25,29 @@ export const registerActionFileDownloadRoutes = (
 ) => {
   const logger = endpointContext.logFactory.get('actionFileDownload');
 
-  // NOTE:
-  // This API (as of today - 2023-06-21) can not be versioned because it is used
-  // to download files from the UI, where its used as part of a `<a>` anchor, which
-  // has no way to define the version header.
-  router.get(
-    {
+  router.versioned
+    .get({
+      access: 'public',
+      // NOTE:
+      // Because this API is used in the browser via `href` (ex. on link to download a file),
+      // we need to enable setting the version number via query params
+      enableQueryVersion: true,
       path: ACTION_AGENT_FILE_DOWNLOAD_ROUTE,
-      validate: EndpointActionFileDownloadSchema,
       options: { authRequired: true, tags: ['access:securitySolution'] },
-    },
-    withEndpointAuthz(
-      { all: ['canWriteFileOperations'] },
-      logger,
-      getActionFileDownloadRouteHandler(endpointContext)
-    )
-  );
+    })
+    .addVersion(
+      {
+        version: '2023-10-31',
+        validate: {
+          request: EndpointActionFileDownloadSchema,
+        },
+      },
+      withEndpointAuthz(
+        { all: ['canWriteFileOperations'] },
+        logger,
+        getActionFileDownloadRouteHandler(endpointContext)
+      )
+    );
 };
 
 export const getActionFileDownloadRouteHandler = (