fix: @html mismatch in hydration

[gtm-nayan]

fixes #9057 fixes #8213

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[brunnerh]

Contains changes to playground, maybe not intended?

[gtm-nayan]

Yeah, still have to write tests and clean things up, thanks for the heads up.

[Crenshinibon]

Any progress here? I would like to avoid transforming all @html uses with the action/innerHTML-Workaround.

[kelvinsjk]

Have copied this PR locally and it seems to fix #7653 as well

[elron]

When this fix is going to be pushed?

[willhoup]

Curious about the state of this work as well. We are running into similar issues outlined in the linked issues from the description.