By Tom Westbrook SYDNEY (Reuters) – Asian stocks bounced on Tuesday after Britain scrapped bits of a controversial tax cut plan, tentatively improving global market sentiment and rallying bonds and the pound. In trade thinned by holidays in China and Hong Kong, MSCI’s broadest index of Asia-Pacific shares outside Japan rose 1%, led by a 2.5% gain in Australia. Japan’s Nikkei rose 2.6%. Sterling drifted up to an almost two-week high of $1.1343, making for a bounce now of almost 10% from a record low hit last week after plans for unfunded tax cuts unleashed chaos on British assets. “The about-fa…