is
Checks if the state associated with the given key was successfully restored from process death.
Note: This function will only return a reliable value after respawnMutableStateFlow has been called for the given key, as decoding must be attempted to determine success.
Return
true if the state was restored and successfully decoded, false otherwise.
Parameters
key
The state key to check.
Checks if the default state was successfully restored from process death. Must be called after respawnMutableStateFlow has been initialized for the default key.