Make certificate config linker friendly

[benaadams]

#25485 targeting 5.0-rc2

Currently can't use Certificates from config files if you link ASP.NET as all the setters for the config section are removed.

This directly references the properties rather than nebulously reflecting them via object so the linker will preserve them as they are directly used.

Resolves #25482

/cc @Tratcher

[Tratcher]

Thanks 😁

[Pilchie]

Approved for RC2 pending CI Completion.

[benaadams]

Error is some kind of maven.apache.org connection issue

* What went wrong:
Execution failed for task ':junitPlatformTest'.
> Could not resolve all files for configuration ':testRuntimeClasspath'.
   > Could not resolve org.junit.jupiter:junit-jupiter-engine:5.3.1.
     Required by:
         project :
      > Could not resolve org.junit.jupiter:junit-jupiter-engine:5.3.1.
         > Could not get resource 'https://repo.maven.apache.org/maven2/org/junit/jupiter/junit-jupiter-engine/5.3.1/junit-jupiter-engine-5.3.1.pom'.
            > Could not GET 'https://repo.maven.apache.org/maven2/org/junit/jupiter/junit-jupiter-engine/5.3.1/junit-jupiter-engine-5.3.1.pom'.
               > Connect to repo.maven.apache.org:443 [repo.maven.apache.org/151.101.188.215] failed: Connection timed out: connect

[Pilchie]

I started a re-run on those two jobs.

[Tratcher]

@Pilchie now it's ready to merge.