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/config.go

@@ -448,10 +448,10 @@ func (c *Config) KeyDirConfig() (string, error) {
 	return keydir, err
 }
 
-// getKeyStoreDir retrieves the key directory and will create
+// GetKeyStoreDir retrieves the key directory and will create
 // and ephemeral one if necessary.
-func getKeyStoreDir(conf *Config) (string, bool, error) {
-	keydir, err := conf.KeyDirConfig()
+func (c *Config) GetKeyStoreDir() (string, bool, error) {
+	keydir, err := c.KeyDirConfig()
 	if err != nil {
 		return "", false, err
 	}

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
 	}