Offset get_timebased_time at game boot (#10744)

- Avoids game bugs in the case where games convert the value read from the clock to a float before performing delta time calculations

rpcs3/Emu/System.cpp

@@ -642,6 +642,8 @@ game_boot_result Emulator::Load(const std::string& title_id, bool add_only, bool
 			}
 		}
 
+		initalize_timebased_time();
+
 		// Set RTM usage
 		g_use_rtm = utils::has_rtm() && ((utils::has_mpx() && g_cfg.core.enable_TSX == tsx_usage::enabled) || g_cfg.core.enable_TSX == tsx_usage::forced);