Return attribute dict directly without temporary variable v2

[springstan]

Breaking change

Proposed change

Just some quick clean up to remove using unnecessary attribute dictionary and then immediately returning them.
Continuation of #41206

# Before
def attributes(self):
    attr = {"key": "value"}
    return attr

# After
def attributes(self):
    return {"key": "value"}

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[balloob]

I know it's not for this PR, but the code would look more beautiful if we turn it around: if standby: return {}, giving more line length for the actual code.

[springstan]

That is a great idea, changed in ecbd821

[balloob]

This ofc is not just in this case, but in many of these cases in this PR. Anyway, not really for this PR, feel free to merge without.

[springstan]

Oh gotcha. Will open a separate PR to clean up these cases.

[balloob]

🎉