Set the the content build id if the content build id has changed, we pull the new BuildManifest from CDN and load it. the client should compare ContentBuildId with its current embedded build id to determine if this content is even compatible BEFORE calling this function. e.g. ContentBuildId="v1.4.22-r23928293" we might consider BUILD_VERSION="1.4.1" compatible but BUILD_VERSION="1.3.223" incompatible (needing an update)