Backport "Fix Kovan and Rinkeby chain IDs (#7762)" (#8462)

Backport #7762 to v7.7.9

Co-authored-by: Sirius Tsou <sirius.tsou@gmail.com>

ui/app/pages/settings/networks-tab/networks-tab.constants.js

@@ -17,21 +17,12 @@ const defaultNetworksData = [
     ticker: 'ETH',
     blockExplorerUrl: 'https://ropsten.etherscan.io',
   },
-  {
-    labelKey: 'kovan',
-    iconColor: '#9064FF',
-    providerType: 'kovan',
-    rpcUrl: 'https://api.infura.io/v1/jsonrpc/kovan',
-    chainId: '4',
-    ticker: 'ETH',
-    blockExplorerUrl: 'https://etherscan.io',
-  },
   {
     labelKey: 'rinkeby',
     iconColor: '#F6C343',
     providerType: 'rinkeby',
     rpcUrl: 'https://api.infura.io/v1/jsonrpc/rinkeby',
-    chainId: '42',
+    chainId: '4',
     ticker: 'ETH',
     blockExplorerUrl: 'https://rinkeby.etherscan.io',
   },
@@ -44,6 +35,15 @@ const defaultNetworksData = [
     ticker: 'ETH',
     blockExplorerUrl: 'https://goerli.etherscan.io',
   },
+  {
+    labelKey: 'kovan',
+    iconColor: '#9064FF',
+    providerType: 'kovan',
+    rpcUrl: 'https://api.infura.io/v1/jsonrpc/kovan',
+    chainId: '42',
+    ticker: 'ETH',
+    blockExplorerUrl: 'https://etherscan.io',
+  },
   {
     labelKey: 'localhost',
     iconColor: 'white',