Router compatibility with Angular 12/13

Editor assessment

A well-targeted compatibility fix. The 'angular' scope immediately tells framework users whether they are affected, and 'router compatibility with Angular 12/13' names the exact versions, which is exactly the specificity changelogs need. Style-wise the subject is a noun phrase rather than an imperative verb ('support Angular 12/13 in the router' would be stricter), and it runs a bit long, but it stays readable and under the practical truncation threshold. The 'Resolves #25448' footer follows the blank-line rule and gives automation an issue to close. No body means the nature of the incompatibility — API changes, peer dependencies, or event timing — is left undocumented.