UriConstraints don't apply default port if it differs from the current port

[bwaidelich]

Description

When using UriConstraints::fromUri() (introduced with Flow 7.0) to create an instance and apply that to an URL with a different host/scheme, the port constraints of the target URL are ignored if they match the default port for the given scheme:

Steps to Reproduce

(string)UriConstraints::fromUri(new Uri('https://some-other-domain.tld'))
    ->applyTo(new Uri('https://some-domain.tld:8080'), false);

Expected behavior

'https://some-other-domain.tld'

Actual behavior

'https://some-other-domain.tld:8080'

Affected Versions

Flow: 7.0+