[Bug] Can't apply openapi decorators to blueprintss' routes

[EverettDunamu]

Describe the bug
A clear and concise description of what the bug is. It there is error log, please provide it.

• I have an Sanic app and I registered some blueprints to it with openapi decorators
• I cannot make any change from openapi decorators in this case.

Screenshots
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To Reproduce
Your code snippet or steps to reproduce the bug.

my_blueprint = Blueprint("MyBlueprint")

@my_blueprint.get("/my-route")
@openapi.summary("I want to apply this summary!") # it is not working
async def get_my_route(request):
    return response.json({})

app = Sanic("MyApp")
app.blueprint(my_blueprint)

app.run()

Expected behavior
A clear and concise description of what you expected to happen.

I want to show the result of applied summary written in the above example.

Environment (please complete the following information):

• OS: macOS
• Browser: Chrome
• Version: 120.0.6099.234

Additional context
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