Suggest `unwrap_or_default` when returning empty `String` in closure

[xphoniex]

Description

Clippy accepts this atm:

empty_string.unwrap_or_else(|| "".to_string());

It should suggest unwrap_or_default for this case, which is more concise:

empty_string.unwrap_or_default();

Version

No response

Additional Labels

@rustbot claim