[Blazor] Remove script check for components

[javiercn]

• We used to have this check to preclude people accidentally adding script tags to their components, since in the context of interactive rendering it does not do what they expect.
• As we are rendering components statically in .NET 8.0, this warning/errors creates more problems than it solves, and there is no reason for us to keep it around, and instead, we will let the customers do as they see fit.

[danroth27]

@javiercn @chsienki Should this now be closed?

[chsienki]

Closed via #8744