fix: add RPC fallbacks

Author: rhlsthrm

chains/base/params.ts

@@ -13,7 +13,16 @@ const specificParams: ChainParams = {
     img: "https://icons.llamao.fi/icons/chains/rsz_base.jpg",
     blockExplorerUrls: { default: { name: "basescan", url: "https://basescan.org/" } },
     rpcUrls: {
-      default: { http: ["https://mainnet.base.org"] },
+      default: {
+        http: [
+          "https://mainnet.base.org",
+          "https://base.llamarpc.com",
+          "https://base-rpc.publicnode.com",
+          "https://gateway.tenderly.co/public/base",
+          "https://base.meowrpc.com",
+          "https://base-mainnet.public.blastapi.io"
+        ]
+      },
       public: { http: ["https://mainnet.base.org"] }
     },
     nativeCurrency: {

chains/mode/params.ts

@@ -12,7 +12,7 @@ const specificParams: ChainParams = {
     img: "https://1430441113-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FmOUA87dDndFyiETJjxpf%2Ficon%2FzSRXk7tkG8rWFi6tG9wV%2FIYXD4bdy_400x400.jpg?alt=media",
     blockExplorerUrls: { default: { name: "modeexplorer", url: "https://explorer.mode.network" } },
     rpcUrls: {
-      default: { http: ["https://mainnet.mode.network/"] },
+      default: { http: ["https://mainnet.mode.network/", "https://1rpc.io/mode", "https://mode.drpc.org"] },
       public: { http: ["https://mainnet.mode.network/"] }
     },
     nativeCurrency: {