fix(@angular/ssr): support all X-Forwarded-* headers when trustProxyHeaders is true

Previously, setting `trustProxyHeaders: true` only allowed a predefined set of common proxy headers (such as `x-forwarded-for` and `x-forwarded-host`). This resulted in warning logs when requests contained other valid proxy headers like `x-forwarded-client-cert` or `x-forwarded-email`.