Use the Happy Eyeballs V3 algorithm

This feature enables the Happy Eyeballs V3 algorithm to make connection attempts. See https://datatracker.ietf.org/doc/draft-pauly-happy-happyeyeballs-v3 for details. Setting the policy to Enabled means Brave will use the Happy Eyeballs V3 algorithm for connection attempts. Setting the policy to Disabled turns off the Happy Eyeballs V3 algorithm. Not setting the policy, Brave will turn on or off the Happy Eyeballs V3 algorithm based on chrome://flags/#happy-eyeballs-v3. This policy supports dynamic refresh. This policy is a temporary measure and will be removed in future versions of Brave.