feat: enable react router feature flags for v7

Signed-off-by: Paul Schultz <pschultz@pobox.com>

packages/frontend-test-utils/package.json

@@ -47,14 +47,14 @@
     "@types/react": "^18.0.0",
     "react": "^18.0.2",
     "react-dom": "^18.0.2",
-    "react-router-dom": "^6.3.0"
+    "react-router-dom": "^6.30.2"
   },
   "peerDependencies": {
     "@testing-library/react": "^16.0.0",
     "@types/react": "^17.0.0 || ^18.0.0",
     "react": "^17.0.0 || ^18.0.0",
     "react-dom": "^17.0.0 || ^18.0.0",
-    "react-router-dom": "^6.3.0"
+    "react-router-dom": "^6.30.2"
   },
   "peerDependenciesMeta": {
     "@types/react": {

packages/frontend-test-utils/src/app/renderInTestApp.tsx

@@ -207,7 +207,13 @@ export function renderInTestApp<TApiPairs extends any[] = any[]>(
         RouterBlueprint.make({
           params: {
             component: ({ children }) => (
-              <MemoryRouter initialEntries={options?.initialRouteEntries}>
+              <MemoryRouter
+                initialEntries={options?.initialRouteEntries}
+                future={{
+                  v7_relativeSplatPath: true,
+                  v7_startTransition: true,
+                }}
+              >
                 {children}
               </MemoryRouter>
             ),

packages/frontend-test-utils/src/app/renderTestApp.tsx

@@ -107,7 +107,13 @@ export function renderTestApp<TApiPairs extends any[] = any[]>(
         RouterBlueprint.make({
           params: {
             component: ({ children }) => (
-              <MemoryRouter initialEntries={options.initialRouteEntries}>
+              <MemoryRouter
+                initialEntries={options.initialRouteEntries}
+                future={{
+                  v7_relativeSplatPath: true,
+                  v7_startTransition: true,
+                }}
+              >
                 {children}
               </MemoryRouter>
             ),