Unity : WebGLIsMobile assembly:<unknown assembly>

I've updated SDK to latest version, and I got this issue while targeting Webgl

How to produce it?

Just use the latest SDK version and the sample scene. and press connect, the following errors show up in the Console.

```
MetaMask: Opening transport for connection has failed
UnityEngine.Logger:LogError (string,object)
MetaMask.Logging.MetaMaskUnityLogger:LogError (object) (at Assets/ThirdParty/MetaMask/Scripts/Logging/MetaMaskUnityLogger.cs:62)
MetaMask.Logging.MetaMaskDebug:LogError (object) (at Assets/ThirdParty/MetaMask/Runtime/Logging/MetaMaskDebug.cs:41)
MetaMask.MetaMaskWallet:Connect () (at Assets/ThirdParty/MetaMask/Runtime/MetaMaskWallet.cs:814)
MetaMask.Unity.Samples.MetaMaskDemo:Connect () (at Assets/ThirdParty/MetaMask/Samples/Main/Scripts/MetaMaskDemo.cs:113)
UnityEngine.EventSystems.EventSystem:Update () (at Library/PackageCache/com.unity.ugui@1.0.0/Runtime/EventSystem/EventSystem.cs:501)
```

```
EntryPointNotFoundException: WebGLIsMobile assembly: type: member:(null)
MetaMask.Transports.Unity.MetaMaskUnityScriptableObjectTransport.get_IsMobile () (at Assets/ThirdParty/MetaMask/Scripts/Transports/Unity/MetaMaskUnityScriptableObjectTransport.cs:58)
MetaMask.Transports.Unity.UI.MetaMaskUnityUITransport.get_UseDeeplink () (at Assets/ThirdParty/MetaMask/Scripts/Transports/Unity/UGUI/MetaMaskUnityUITransport.cs:88)
MetaMask.Transports.Unity.UI.MetaMaskUnityUITransport.IsDeeplinkAvailable () (at Assets/ThirdParty/MetaMask/Scripts/Transports/Unity/UGUI/MetaMaskUnityUITransport.cs:204)
MetaMask.Transports.Unity.UI.MetaMaskUnityUIQRImage.ShowQR (System.String url) (at Assets/ThirdParty/MetaMask/Scripts/Transports/Unity/UGUI/MetaMaskUnityUIQRImage.cs:110)
MetaMask.Transports.Unity.UI.MetaMaskUnityUIQRImage.OnMetaMaskConnectRequest (System.String url) (at Assets/ThirdParty/MetaMask/Scripts/Transports/Unity/UGUI/MetaMaskUnityUIQRImage.cs:131)
MetaMask.Transports.Unity.MetaMaskUnityTransportBroadcaster.OnMetaMaskConnectRequest (System.String url) (at Assets/ThirdParty/MetaMask/Scripts/Transports/Unity/MetaMaskUnityTransportBroadcaster.cs:111)
MetaMask.Transports.Unity.UI.MetaMaskUnityUITransport.Connect (System.String url) (at Assets/ThirdParty/MetaMask/Scripts/Transports/Unity/UGUI/MetaMaskUnityUITransport.cs:121)
MetaMask.MetaMaskWallet.Connect () (at Assets/ThirdParty/MetaMask/Runtime/MetaMaskWallet.cs:810)
UnityEngine.Logger:LogException(Exception)
MetaMask.Logging.MetaMaskUnityLogger:LogException(Exception) (at Assets/ThirdParty/MetaMask/Scripts/Logging/MetaMaskUnityLogger.cs:69)
MetaMask.Logging.MetaMaskDebug:LogException(Exception) (at Assets/ThirdParty/MetaMask/Runtime/Logging/MetaMaskDebug.cs:50)
MetaMask.MetaMaskWallet:Connect() (at Assets/ThirdParty/MetaMask/Runtime/MetaMaskWallet.cs:815)
MetaMask.Unity.Samples.MetaMaskDemo:Connect() (at Assets/ThirdParty/MetaMask/Samples/Main/Scripts/MetaMaskDemo.cs:113)
UnityEngine.EventSystems.EventSystem:Update() (at Library/PackageCache/com.unity.ugui@1.0.0/Runtime/EventSystem/EventSystem.cs:501)
```