[BUG] repeat_every now blocks application startup

[gabriel-faria-zipline]

Describe the bug
On v.0.6.0 the @repeat_every will prevent the application from starting up.

To Reproduce
A simple @repeat_every implementation:

import logging
from contextlib import asynccontextmanager

import uvicorn
from fastapi import FastAPI
from fastapi_utils.tasks import repeat_every

logging.basicConfig(level=logging.INFO, force=True)
logger = logging.getLogger(__name__)


@asynccontextmanager
async def lifespan(app: FastAPI):
    await do_something()
    yield


app = FastAPI(lifespan=lifespan)


@repeat_every(seconds=1, logger=logger)
async def do_something() -> None:
    logger.info("REPETITION EXECUTED.")
    return


@app.get("/")
async def health():
    return 'Success'


if __name__ == "__main__":
    uvicorn.run(app, host="localhost", port=8080)

Expected behavior
The app starts showing: (which works on v0.2.0

$ python main.py                                        
INFO:     Started server process [4160]
INFO:     Waiting for application startup.
INFO:__main__:REPETITION EXECUTED.
INFO:     Application startup complete.
INFO:     Uvicorn running on http://localhost:8080 (Press CTRL+C to quit)
INFO:__main__:REPETITION EXECUTED.

But in v0.6.0 the server is blocked by repeat_every execution:

$ python main.py                                          
INFO:     Started server process [4223]
INFO:     Waiting for application startup.     <<<< It never gets past this
INFO:__main__:REPETITION EXECUTED.

Environment:

• OS: MacOs

>>> print(fastapi_utils.__version__)
0.6.0
>>> print(fastapi.__version__)
0.111.0
>>> print(pydantic.utils.version_info())
             pydantic version: 1.10.15
            pydantic compiled: False
                 install path: /opt/homebrew/lib/python3.12/site-packages/pydantic
               python version: 3.12.2 (main, Feb  6 2024, 20:19:44) [Clang 15.0.0 (clang-1500.1.0.2.5)]
                     platform: macOS-14.5-arm64-arm-64bit
     optional deps. installed: ['dotenv', 'email-validator', 'typing-extensions']

Python 3.12.2

[ollz272]

This is already being tracked: #305

[yuval9313]

Indeed duplicate