IPNetwork remark about lower bits is different for net10.0

### Type of issue

Outdated article

### Description

See PR https://github.com/dotnet/runtime/pull/117367.

The remarks section, "This type disallows arbitrary IP-address/prefix-length CIDR pairs..." appears to no longer apply for dotnet 10+.

### Page URL

https://learn.microsoft.com/en-us/dotnet/api/system.net.ipnetwork?view=net-10.0#remarks

### Content source URL

https://github.com/dotnet/dotnet-api-docs-temp/blob/live/xml/System.Net/IPNetwork.xml

### Document Version Independent Id

79ae59b2-8a09-e5b1-07e4-9e70327514b4

### Platform Id

daa4a97b-50fa-aec2-d35d-b84783b0014e

### Article author

@karelz