Lower minimum supported Node.js version for Wasm Exnref EH (#25651)

The `--experimental-wasm-exnref` flag has been available since Node.js
22, see commit:
nodejs/node@09a8440

Author: kleisauke

test/common.py

@@ -630,7 +630,7 @@ def require_wasm_eh(self):
     if 'EMTEST_SKIP_WASM_EH' in os.environ:
       self.skipTest('test requires node v24 or d8 (and EMTEST_SKIP_WASM_EH is set)')
     self.set_setting('WASM_LEGACY_EXCEPTIONS', 0)
-    if self.try_require_node_version(24):
+    if self.try_require_node_version(22):
       self.node_args.append('--experimental-wasm-exnref')
       return
 

tools/feature_matrix.py

@@ -153,7 +153,7 @@ class Feature(IntEnum):
     # unflagged version of Node.js 260000 that ships Wasm EH enabled, after
     # Emscripten unit testing has migrated to Node.js 26, and Emsdk ships
     # Node.js 26)
-    'node': 240000,
+    'node': 220000,
   },
   # Growable SharedArrayBuffers improves memory growth feature in multithreaded
   # builds by avoiding need to poll resizes to ArrayBuffer views in Workers.