Enable automatic instance hopping for Flex

[filiptronicek]

Description

For an easier migration to Flex, automatically change the Gitpod host to app.gitpod.io when users visit it.

Sister PR to https://github.com/gitpod-io/gitpod-next/pull/5806.

[Copilot]

Pull Request Overview

This pull request automatically redirects users from gitpod.io and related domains to app.gitpod.io to better support the migration to Flex.

• Updated content script configuration to include app.gitpod.io in the matches array.
• Modified the endpoint update logic to use window.location.href instead of a precomputed currentHost.

Comments suppressed due to low confidence (1)

src/contents/gitpod-dashboard.ts:35

• Switching from currentHost to window.location.href may include unwanted URL parts (such as query parameters) that could impact endpoint parsing. Consider using a sanitized or consistent version of the host value to avoid unintended behavior.

await storage.set(STORAGE_KEY_ADDRESS, parseEndpoint(window.location.href));