Fix broken Node Connection Panel.
Fix broken Node Connection Panel.

Loading the node connection panel is broken due to an unhandled javascript exception:

  Uncaught (in promise) TypeError: NodeMain.NodeConnectionsView is not a constructor
      at new NodeConnectionsPanel (NodeConnectionsPanel.js:1)
      at Runtime.sharedInstance (shell.js:75)
      at Extension._createInstance (shell.js:112)
      at async ProvidedView.widget (View.js:25)
      at async Promise.all (://devtools/bundled/index 1)

This is a regression likely caused by
  https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/1950167

You can repro this by:

 - node --inspect
 - open about:inspect
 - click "Open dedicated DevTools for Node"
 - select Connection Panel.

It'll be blank. You should see a list of targets, and an "add connection" button.

Change-Id: Ifcc7dead303dcd45ef4445f82f17b6277a323181
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2014283
Reviewed-by: Lorne Mitchell <b024a4e2ee56b9b5450225fa7affa8f95408a018@microsoft.com>
Reviewed-by: Robert Paveza <7787129de3d0cb4911c68d958db3023863584560@microsoft.com>
Commit-Queue: Mike Jackson <99f87a6916722b2afede8077f5cd676395cda818@microsoft.com>

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