eth/tracers/js: drop duktape engine (ethereum#24934)

This PR also comes with 2 fixes in the Goja tracer and one small behavioural change:

    I had handled errors in the native Go functions by panicing. My oversight was that Goja only handles panics with a Goja.Value as argument. The difference is panic(goja.Value) allows JS to catch the exception whereas Interrupt(error) doesn't.
    There was a race in how I handled Stop.
    Because of 1. some of the methods that simply return nil on error (like memory.slice) now throw an exception.

eth/tracers/internal/tracetest/calltrace_test.go

@@ -134,10 +134,6 @@ func TestCallTracerNative(t *testing.T) {
 	testCallTracer("callTracer", "call_tracer", t)
 }
 
-func TestCallTracerLegacyDuktape(t *testing.T) {
-	testCallTracer("callTracerLegacyDuktape", "call_tracer_legacy", t)
-}
-
 func testCallTracer(tracerName string, dirPath string, t *testing.T) {
 	files, err := os.ReadDir(filepath.Join("testdata", dirPath))
 	if err != nil {