iOS webview no dealloc

[zdpdsy]

Hi Team, i find some question in webview，The RNCWKWebView not dealloc，i find the reason after debug。
destroyWebView（602 line in RNCWebViewImpl.m）Code will never be executed because RNCWebViewImpl.m don't change to RNCWebViewImpl.mm，mean is RCT_NEW_ARCH_ENABLED it always return false。

the solution is: change RNCWebViewImpl.m to RNCWebViewImpl.mm

react-native:0.73.0
"react-native-webview": "13.10.5",

[MatthiasDh]

facebook/react-native#43088