Which @angular/* package(s) are relevant/related to the feature request?

core

Description

The ngSkipHydration is a special attribute that instructs Angular that hydration logic should be skipped for a given component, for example:

<cmp ngSkipHydration />

Angular expects this attribute to be known statically (i.e. it can not be a binding) and also it can not have values other than "true" or an empty value. This would be covered in documentation, but it'd be also great to add a template diagnostic to make sure that:

• a node doesn't have the ngSkipHydration in bindings
• the value of the ngSkipHydration is within the allowed range (['true', '' /* empty string */])

The implementation would likely be very similar to the TextAttributeNotBindingSpec check.

Also related PR with a runtime check: #49500.