fix(nimbus): fix absolute value being called on None

[moibra05]

Because

• Some metric points do not contain the point field and are throwing errors b/c the current code assumes otherwise
• The issue here is that abs() is attempting to be called on these values which throw errors when point is None

This commit

• Adds a guard to check if the accessed point is None before calling abs

Fixes #14240

[freshstrangemusic]

Suggested change

	if value is None or type(value) not in [int, float]:
	if value is None or type(value) not in (int, float):

tuples are cheaper than lists because they are not mutable.