Fix creating multiple ElkM1 systems with TLS 1.2

[bdraco]

Proposed change

urlparse couldn't handle the _ in the protocol scheme so we need to use the one from the lib.

fixes #81516

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[home-assistant]

Hey there @gwww, mind taking a look at this pull request as it has been labeled with an integration (elkm1) you are listed as a code owner for? Thanks!

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[gwww]

LGTM!

[bdraco]

thanks