The function format_lazy should return _StrPromise #2840
Description
Bug report
The function format_lazy should return _StrPromise and not _StrOrPromise.
It is important when the output of this command is used with the function which expect promise only (for lazy evaluation of translation). This is done to notify the user if his translation will be evaluated incorrectly.
What's wrong
We are receiving these type of errors:
error: Argument "my_argument" to "my_function" of "MyClass" has incompatible type "str | _StrPromise"; expected "_StrPromise" [arg-type]
How is that should be
No typing error should be returned as the format_lazy returning promise by itself
System information
Not Applicable