pydantic v2,computed cannot use attribute from exclude

modify from example:
https://github.com/tortoise/tortoise-orm/blob/develop/examples/fastapi/models.py
show full_name and hide name:

    class PydanticMeta:
        computed = ["full_name"]
        exclude = ["password_hash","name"]

raise AttributeError(f'{type(self).__name__!r} object has no attribute {item!r}')

AttributeError: 'User' object has no attribute 'name'

Describe the bug
tortoise-orm: v0.20.0
pydantic : v2.3.0

Expected behavior
like pydantic v1, computed first then exclude

Start with examples/fastapi/models.py and reproduce the Pydantic v2 case where User computes full_name while name is excluded. Trace the serialization order that produces the AttributeError, then verify that the computed field works while name remains hidden and compare the behavior with the stated Pydantic v1 expectation.