Don't requrie node to run bigint tests. NFC (#18831)

These test should run find under v8

Author: sbc100

test/common.py

@@ -279,7 +279,6 @@ def metafunc(self, with_bigint):
       if self.get_setting('WASM_BIGINT') is not None:
         self.skipTest('redundant in bigint test config')
       self.set_setting('WASM_BIGINT')
-      self.require_node()
       self.node_args += shared.node_bigint_flags()
       f(self)
     else:
@@ -467,6 +466,7 @@ def require_node(self):
     self.require_engine(config.NODE_JS)
 
   def require_engine(self, engine):
+    logger.debug(f'require_engine: {engine}')
     if self.required_engine and self.required_engine != engine:
       self.skipTest(f'Skipping test that requires `{engine}` when `{self.required_engine}` was previously required')
     self.required_engine = engine