(This Oct.09 story has been corrected to add negative COVID-19 test condition in paragraph 13) By Kantaro Komiya and Kentaro Sugiyama TOKYO (Reuters) – As Japan throws open its doors to visitors this week after more than two years of pandemic isolation, hopes for a tourism boom face tough headwinds amid shuttered shops and a shortage of hospitality workers. From Tuesday, Japan will reinstate visa-free travel to dozens of countries, ending some of world’s strictest border controls to slow the spread of COVID-19. Prime Minister Fumio Kishida is counting on tourism to help invigorate the economy …