fix(create-vite): add rel="noreferrer" to elements with target="_blank"

[oekazuma]

Description

Fixed a warning that occurred when using <a target="_blank"> without rel="noreferrer" due to a change in sveltejs/svelte#6188 released in Svelte v3.52.0.

Additional context

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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• Read the Contributing Guidelines.
• Read the Pull Request Guidelines and follow the Commit Convention.
• Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
• Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
• Ideally, include relevant tests that fail without this PR but pass with it.

[haoqunjiang]

Let's hold this for a while because this issue is still being discussed in the svelte repo and may be reverted: sveltejs/svelte#6289 (comment)

[oekazuma]

Yes, it is possible that it will eventually return to normal, but if it does not return to normal immediately, this response should be merged.

It is obviously noise to see this warning on a project that has just been initially set up.

If you plan to revert back in Svelte 4, it will be after next year as far as I know.
ref: sveltejs/svelte#6289 (comment)

[haoqunjiang]

Thanks for the information.

So, even though the default template created by Vite does not support IE 11, the svelte compiler does by default, and there seems to be no easy way to turn off this warning…

Then I think we have to accept this workaround.