feat(rr6): Add shims for React Router 3 → 6

[evanpurkhiser]

This is tracked by https://github.com/getsentry/frontend-tsc/issues/23

[codecov]

Bundle Report

Changes will increase total bundle size by 203.94kB ⬆️

Bundle name	Size	Change
app-webpack-bundle-array-push	30.26MB	203.94kB ⬆️

[codecov]

Codecov Report

Attention: Patch coverage is 25.71429% with 130 lines in your changes missing coverage. Please review.

✅ All tests successful. No failed tests found.

Files	Patch %	Lines
static/app/utils/browserHistory.tsx	3.12%	31 Missing ⚠️
static/app/utils/useRouter.tsx	4.00%	22 Missing and 2 partials ⚠️
static/app/utils/reactRouter6Compat/router.tsx	66.66%	18 Missing ⚠️
static/app/utils/reactRouter6Compat/location.tsx	0.00%	14 Missing ⚠️
static/app/utils/useRoutes.tsx	7.69%	10 Missing and 2 partials ⚠️
static/app/utils/useNavigate.tsx	0.00%	5 Missing and 2 partials ⚠️
.../app/views/settings/components/settingsNavItem.tsx	22.22%	7 Missing ⚠️
static/app/utils/useLocation.tsx	14.28%	4 Missing and 2 partials ⚠️
static/app/main.tsx	0.00%	4 Missing ⚠️
static/app/utils/useParams.tsx	25.00%	1 Missing and 2 partials ⚠️
... and 3 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #70632      +/-   ##
==========================================
- Coverage   78.16%   78.13%   -0.03%     
==========================================
  Files        6894     6896       +2     
  Lines      306749   306914     +165     
  Branches    52794    52825      +31     
==========================================
+ Hits       239759   239796      +37     
- Misses      60602    60718     +116     
- Partials     6388     6400      +12     

[scttcper]

seems to work