HPCC-30374 Provide JTrace option to declare span start time

Fix wasmembed compile

Signed-off-by: Gordon Smith <[email protected]>

plugins/wasmembed/abi.hpp

@@ -1,6 +1,4 @@
-#include <string>
-#include <sstream>
-
+#include <span>
 #include <wasmtime.hh>
 
 std::tuple<uint32_t /*ptr*/, std::string /*encoding*/, uint32_t /*byte length*/> load_string(const wasmtime::Span<uint8_t> &data, uint32_t ptr);