frontend: remove currency selector and fix suggested account name for BTC-only.

When there is only one coin supported, we want the back button on the
choose name step to close the dialog. And we want the account name to be suggested.

Author: bznein

CHANGELOG.md

@@ -10,6 +10,7 @@
 - Fix wrong btc/ltc transaction timestamp during header sync
 - Ethereum bugfix: show all internal transactions that share the same transaction ID
 - Allow up to 6 unused BTC/LTC accounts (previously 5)
+- Fix empty suggested name for BTC account when only BTC is supported by the BitBox.
 
 ## v4.48.4
 - macOS: fix potential USB communication issue with BitBox02 bootloaders <v1.1.2 and firmwares <v9.23.1

frontends/web/src/routes/account/add/add.tsx

@@ -91,8 +91,12 @@ export const AddAccount = ({ accounts }: TAddAccountGuide) => {
       navigate(-1);
       break;
     case 'choose-name':
-      setStep('select-coin');
-      setErrorMessage(undefined);
+      if (onlyOneSupportedCoin()) {
+        navigate(-1);
+      } else {
+        setStep('select-coin');
+        setErrorMessage(undefined);
+      }
       break;
     case 'success':
       setStep('choose-name');
@@ -155,7 +159,10 @@ export const AddAccount = ({ accounts }: TAddAccountGuide) => {
           ref={inputRef}
           id="accountName"
           onInput={e => setAccountName(e.target.value)}
-          value={accountName} />
+          value={
+            accountName ||
+              (onlyOneSupportedCoin() ? supportedCoins[0].suggestedAccountName : '')
+          } />
       );
     case 'success':
       return (