feat(plugin-client-redirects): keep the query string + hash

[Xabilahu]

Pre-flight checklist

• I have read the Contributing Guidelines on pull requests.
• If this is a code change: I have written unit tests and/or added dogfooding pages to fully verify the new behavior.
• If this is a new API or substantial change: the PR has an accompanying issue (closes #0000) and the maintainers have approved on my working plan.

Motivation

Closes #8206

Test Plan

yarn test

Test Suites: 143 passed, 143 total
Tests:       1953 passed, 1953 total
Snapshots:   616 passed, 616 total
Time:        19.238 s
Ran all test suites.
Done in 19.99s.

Test links

Deploy preview: https://deploy-preview-8227--docusaurus-2.netlify.app/

Related issues/PRs

• Issue docusaurus-plugin-client-redirects does not keep the query string. #8206

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[github-actions]

⚡️ Lighthouse report for the deploy preview of this PR

URL	Performance	Accessibility	Best Practices	SEO	PWA	Report
/	🟠 77	🟢 97	🟢 100	🟢 100	🟢 90	Report
/docs/installation	🟠 73	🟢 100	🟢 100	🟢 100	🟢 90	Report

[slorber]

Thanks, LGTM 👍

Just added support for keeping the hash too + fixed a little client redirect bug on our own site

Test URL: https://deploy-preview-8227--docusaurus-2.netlify.app/docs/introduction?qs=true#someHash

Note: this assumes that the redirect URL does not already contain a query string already, which is likely to be the case but maybe we'll need to merge(window.location.search,destinationUrl.search) later 🤷‍♂️ good enough for now 👍

[Xabilahu]

Thanks @slorber for the adjustments! 😉