Only validate the address on the Admin User page when it changes - #1479

Process completed with exit code 1.

Unexpected input(s) 'include-prerelease', valid inputs are ['dotnet-version', 'dotnet-quality', 'dotnet-channel', 'global-json-file', 'source-url', 'owner', 'config-file', 'cache', 'cache-dependency-path', 'workloads', 'architecture']