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

router

Description

RouterLinkActive and some of its inputs do not handle undefined or null.

Proposed solution

RouterLink deactivates when null or undefined is passed. This is also handled in its other inputs: fragment, queryParams, queryParamsHandling, etc.

The same should be true for RouterLinkActive and by extension to its inputs: routerLinkActiveOptions, etc.

Alternatives considered

None