enable EVM sha3_bigsize test on 32 bits

tests/test_allowed_to_fail.nim

@@ -144,9 +144,6 @@ func skipNewGSTTests*(folder: string, name: string): bool =
   ]
 
 func skipVMTests*(folder: string, name: string): bool =
-  when sizeof(int) == 4:
-    if name == "sha3_bigSize.json":
-      return true
   result = (folder == "vmPerformance" and "loop" in name)
 
 func skipBCTests*(folder: string, name: string): bool =

tests/test_vm_json.nim

@@ -91,3 +91,6 @@ proc testFixture(fixtures: JsonNode, testStatusIMPL: var TestStatus) =
     check(computation.isError)
     if not fixture{"pre"}.isNil:
       verifyStateDb(fixture{"pre"}, computation.vmState.readOnlyStateDB)
+
+when isMainModule:
+  vmJsonMain()