Add checks for empty registryName in goBack

pages/[chainName]/[address]/index.tsx

@@ -62,7 +62,11 @@ const Multipage = () => {
   }, [fetchMultisig, multisigAddress]);
 
   return (
-    <Page goBack={{ pathname: `/${chain.registryName}`, title: "home" }}>
+    <Page
+      goBack={
+        chain.registryName ? { pathname: `/${chain.registryName}`, title: "home" } : undefined
+      }
+    >
       <StackableContainer base>
         <StackableContainer>
           <label>Multisig Address</label>

pages/[chainName]/[address]/transaction/[transactionID].tsx

@@ -146,10 +146,14 @@ const TransactionPage = ({
 
   return (
     <Page
-      goBack={{
-        pathname: `/${chain.registryName}/${multisigAddress}`,
-        title: "multisig",
-      }}
+      goBack={
+        chain.registryName
+          ? {
+              pathname: `/${chain.registryName}/${multisigAddress}`,
+              title: "multisig",
+            }
+          : undefined
+      }
     >
       <StackableContainer base>
         <StackableContainer>

pages/[chainName]/[address]/transaction/new.tsx

@@ -39,11 +39,15 @@ const NewTransactionPage = () => {
 
   return (
     <Page
-      goBack={{
-        pathname: `/${chain.registryName}/${multisigAddress}`,
-        title: "multisig",
-        needsConfirm: true,
-      }}
+      goBack={
+        chain.registryName
+          ? {
+              pathname: `/${chain.registryName}/${multisigAddress}`,
+              title: "multisig",
+              needsConfirm: true,
+            }
+          : undefined
+      }
     >
       <StackableContainer base>
         {accountError || !accountOnChain ? (

pages/[chainName]/account.tsx

@@ -6,7 +6,11 @@ export default function AccountPage() {
   const { chain } = useChains();
 
   return (
-    <Page goBack={{ pathname: `/${chain.registryName}`, title: "home" }}>
+    <Page
+      goBack={
+        chain.registryName ? { pathname: `/${chain.registryName}`, title: "home" } : undefined
+      }
+    >
       <AccountView />
     </Page>
   );

pages/[chainName]/create.tsx

@@ -7,7 +7,13 @@ export default function CreatePage() {
   const { chain } = useChains();
 
   return (
-    <Page goBack={{ pathname: `/${chain.registryName}`, title: "home", needsConfirm: true }}>
+    <Page
+      goBack={
+        chain.registryName
+          ? { pathname: `/${chain.registryName}`, title: "home", needsConfirm: true }
+          : undefined
+      }
+    >
       <StackableContainer base>
         <StackableContainer lessPadding>
           <h1 className="title">Create Legacy Multisig</h1>