feat: use cross-fetch instead of node-fetch (#19621)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

web3.js/rollup.config.js

@@ -58,7 +58,7 @@ function generateConfig(configType, format) {
       'crypto-hash',
       'jayson/lib/client/browser',
       'js-sha3',
-      'node-fetch',
+      'cross-fetch',
       'rpc-websockets',
       'secp256k1',
       'superstruct',
@@ -87,9 +87,10 @@ function generateConfig(configType, format) {
             'bs58',
             'buffer',
             'crypto-hash',
+            'http',
+            'https',
             'jayson/lib/client/browser',
             'js-sha3',
-            // 'node-fetch', will resolve to whatwg-fetch
             'rpc-websockets',
             'secp256k1',
             'superstruct',
@@ -99,6 +100,8 @@ function generateConfig(configType, format) {
           break;
         }
         case 'iife': {
+          config.external = ['http', 'https'];
+
           config.output = [
             {
               file: 'lib/index.iife.js',