graph-v2 requests fail after update to 3.1.9

[kavvkon]

When hitting: http://192.168.1.100:4200/api/flow_runs/c07e1f66-4187-48be-9b5d-5464aaaeddc2/graph-v2
It happens for all old and new flows, even those that were rendering fine in previous version (updated from 3.1.4)

Traceback (most recent call last):
  File "/home/user1/miniconda3/envs/prefect/lib/python3.12/site-packages/sqlalchemy/engine/base.py", line 1815, in _execute_context
    context = constructor(
              ^^^^^^^^^^^^
  File "/home/user1/miniconda3/envs/prefect/lib/python3.12/site-packages/sqlalchemy/engine/default.py", line 1493, in _init_compiled
    flattened_processors[key](compiled_params[key])
  File "/home/user1/miniconda3/envs/prefect/lib/python3.12/site-packages/sqlalchemy/sql/type_api.py", line 2037, in process
    fixed_process_param(value, dialect)
  File "/home/user1/miniconda3/envs/prefect/lib/python3.12/site-packages/prefect/server/utilities/database.py", line 127, in process_bind_param
    if value.tzinfo is None:
       ^^^^^^^^^^^^
AttributeError: 'str' object has no attribute 'tzinfo'

Version:             3.1.9
API version:         0.8.4
Python version:      3.12.4
Git commit:          e1fe7943
Built:               Fri, Dec 20, 2024 4:33 PM
OS/Arch:             linux/x86_64
Profile:             user1
Server type:         server
Pydantic version:    2.8.2

Originally posted by @kavvkon in #15153 (comment)

[zzstoatzz]

hi @kavvkon - thanks for the issue!

this seems related to #16392 but I am not yet sure exactly how yet

[zzstoatzz]

I cannot yet reproduce this, but I wonder if its related to loading older data after the linked PR was released

[desertaxle]

Hey @kavvkon! I think we'll need some more info to troubleshoot this issue.

Can you provide:

1. Information about your database including its version
2. An example flow that shows this error when you try to view a run in the UI