cmd/geth: make account commands not require datadir lock (#27084)

Makes the `geth account ... ` commands usable even if a geth-process is already executing, since the account commands do not read the chaindata, it was not required for those to use the same locking mechanism. 

---
Signed-off-by: jsvisa <delweng@gmail.com>
Co-authored-by: Martin Holst Swende <martin@swende.se>
Co-authored-by: Sina Mahmoodi <itz.s1na@gmail.com>

node/node.go

@@ -119,7 +119,7 @@ func New(conf *Config) (*Node, error) {
 	if err := node.openDataDir(); err != nil {
 		return nil, err
 	}
-	keyDir, isEphem, err := getKeyStoreDir(conf)
+	keyDir, isEphem, err := conf.GetKeyStoreDir()
 	if err != nil {
 		return nil, err
 	}