Update query param prefix to reduce length

[ijjk]

With the addition of the query prefix we can hit the max length for PCRE named matches so this reduces the prefix length and ensures we go through the param name validation still

x-ref: https://twitter.com/simonecervini/status/1644123851003928579

[ijjk]

Failing test suites

Commit: 9b4d9e5

pnpm testheadless test/e2e/app-dir/navigation/navigation.test.ts

• app dir - navigation > redirect > components > should redirect to external url

Expand output

● app dir - navigation › redirect › components › should redirect to external url

thrown: "Exceeded timeout of 240000 ms for a test.
Use jest.setTimeout(newTimeout) to increase the timeout value, if this is a long-running test."

  157 |         })
  158 |
> 159 |         it('should redirect to external url', async () => {
      |         ^
  160 |           const browser = await next.browser('/redirect/external')
  161 |           expect(await browser.waitForElementByCss('h1').text()).toBe(
  162 |             'Example Domain'

  at e2e/app-dir/navigation/navigation.test.ts:159:9
  at e2e/app-dir/navigation/navigation.test.ts:130:7
  at fn (e2e/app-dir/navigation/navigation.test.ts:129:5)
  at lib/e2e-utils.ts:242:5

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