[Hyperdrive] rename hyperdrive local connection string variable name

[edmundhung]

Summary

We are renaming Hyperdrive local connection string environment variable from WRANGLER_HYPERDRIVE_LOCAL_CONNECTION_STRING_<BINDING_NAME> to CLOUDFLARE_HYPERDRIVE_LOCAL_CONNECTION_STRING_<BINDING_NAME>. The old variable name is still supported but will now show a deprecation warning.

See cloudflare/workers-sdk#10652

Screenshots (optional)

Documentation checklist

• Is there a changelog entry (guidelines)? If you don't add one for something awesome and new (however small) — how will our customers find out? Changelogs are automatically posted to RSS feeds, the Discord, and X.
• The documentation style guide has been adhered to.
• If a larger change - such as adding a new page- an issue has been opened in relation to any incorrect or out of date information that this PR fixes.
• Files which have changed name or location have been allocated redirects.

[github-actions]

This pull request requires reviews from CODEOWNERS as it changes files that match the following patterns:

Pattern	Owners
/src/content/docs/hyperdrive/	@elithrar, @thomasgauvin, @sejoker, @oxyjun, @cloudflare/pcx-technical-writing
/src/content/docs/pages/	@cloudflare/workers-docs, @GregBrimble, @WalshyDev, @aninibread, @irvinebroque, @cloudflare/pcx-technical-writing, @kodster28
/src/content/docs/workers/wrangler/	@cloudflare/wrangler, @irvinebroque, @kodster28, @cloudflare/pcx-technical-writing, @cloudflare/workers-runtime-1

[github-actions]

Preview URL: https://8a76065b.preview.developers.cloudflare.com
Preview Branch URL: https://edmundhung-rename-hyperdrive-env-var.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/hyperdrive/configuration/local-development/	https://edmundhung-rename-hyperdrive-env-var.preview.developers.cloudflare.com/hyperdrive/configuration/local-development/
https://developers.cloudflare.com/workers/wrangler/system-environment-variables/	https://edmundhung-rename-hyperdrive-env-var.preview.developers.cloudflare.com/workers/wrangler/system-environment-variables/
https://developers.cloudflare.com/pages/functions/bindings/	https://edmundhung-rename-hyperdrive-env-var.preview.developers.cloudflare.com/pages/functions/bindings/