make runtime compatible with wasm

runtime/build.go

@@ -26,12 +26,17 @@ var hasAltPkg = map[string]none{
 	"hash/crc32":               {},
 	"internal/abi":             {},
 	"internal/bytealg":         {},
+	"internal/chacha8rand":     {},
 	"internal/cpu":             {},
 	"internal/itoa":            {},
 	"internal/godebug":         {},
 	"internal/oserror":         {},
 	"internal/poll":            {},
 	"internal/reflectlite":     {},
+	"internal/runtime/atomic":  {},
+	"internal/runtime/maps":    {},
+	"internal/runtime/sys":     {},
+	"internal/sync":            {},
 	"internal/syscall/execenv": {},
 	"internal/syscall/unix":    {},
 	"math":                     {},
@@ -52,4 +57,5 @@ var hasAltPkg = map[string]none{
 	"runtime/trace":            {},
 	"runtime/internal/syscall": {},
 	"io":                       {},
+	"io/fs":                    {},
 }