fix: Allow depends on injected generators

[Zhenay]

Inject did not work properly when you made a dependency on already injected generator function (both sync and async)

from fast_depends import Depends, inject

@inject
def dep():
    yield 5

@inject
def func1(a = Depends(dep)):
    print(a)

# print "<fast_depends.use.solve_gen object at 0x...>"

@inject
def func2(a: int = Depends(dep)):
    print(a)

# raise ValidationError:
# ...
# ValidationError: 1 validation error for func2
# a
#   Input should be a valid integer [type=int_type, input_value=<fast_depends.use.solve_g...bject at 0x...>, input_type=solve_gen]
# ...