Domain needs to be expanded due to the browser connection limitations.

[Eithea]

Description:

https://docs.pushtechnology.com/cloud/latest/manual/html/designguide/solution/support/connection_limitations.html#:~:text=Most%20modern%20browsers%20allow%20six,with%20any%20server%20or%20proxy

Since CodePair uses only one domain, it cannot maintain tabs more than the browser connection limit.
Domain needs to be expanded like aaa.codepair.yorkie.dev/123456

Why:

For use more CodePair tabs than the browser connection limit.