NEW DELHI, Sept 8 (Reuters) - U.S. President Joe Biden and Indian Prime Minister Narendra Modi spoke for nearly an hour on Friday about joint plans on technology, infrastructure and the importance of a healthy democracy, shortly after Biden arrived in New Delhi for a G20 summit over the weekend. The two leaders pledged to cooperate on issues from democratic values and human rights to semiconductor supply chains and quantum computing, according to a joint statement. "We're frankly thrilled to be here. It's great to see the Indians so appreciative that we've come," Kurt Campbell, the senior U.S. official for...