fix: handle deleted cookies in single flight request

[zhengkyl]

PR Checklist

Please check if your PR fulfills the following requirements:

• Addresses an existing open issue: fixes [Bug?]: Cannot delete cookies during single flight request #1863
• Tests for the changes have been added (for bug fixes / features)

What is the current behavior?

#1863 Right now cookies are not deleted in single flight requests

What is the new behavior?

Cookies are deleted in single flight requests

Other information

cookie-es is added as a explicit dependency, but it's what h3 uses internally.
https://github.com/unjs/h3/blob/main/src/utils/cookie.ts#L69

Here's parseSetCookie for reference. https://github.com/unjs/cookie-es/blob/main/src/set-cookie/parse.ts

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Latest commit: 587668c

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