test(ui): Migrate deprecated router mocks to memory router

[scttcper]

Doing a batch of various files that cursor was able to do automatically.

[codecov]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
12409	1	12408	10

View the top 1 failed test(s) by shortest run time

BalanceChangeAction re-enables form after error

Stack Traces | 1.1s run time

Error: expect(element).toHaveValue(10)

Expected the element to have value:
  10
Received:
  1

Ignored nodes: comments, script, style
...
    at toHaveValue (.../gsAdmin/components/changeBalanceAction.spec.tsx:184:45)
    at runWithExpensiveErrorDiagnosticsDisabled (.../sentry/node_modules/.pnpm/@testing-library+dom@10.4.0/node_modules/@.../dom/dist/config.js:47:12)
    at checkCallback (.../sentry/node_modules/.pnpm/@testing-library+dom@10.4.0/node_modules/@.../dom/dist/wait-for.js:124:77)
    at checkRealTimersCallback (.../sentry/node_modules/.pnpm/@testing-library+dom@10.4.0/node_modules/@.../dom/dist/wait-for.js:118:16)
    at Timeout.task [as _onTimeout] (.../sentry/node_modules/.pnpm/jsdom@26.1..../jsdom/browser/Window.js:579:19)
    at listOnTimeout (node:internal/timers:588:17)
    at processTimers (node:internal/timers:523:7)

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