Since Wild Shape can't be dispelled, which implies that it's not "inherently magical", can the spell True Seeing allow someone to see through a Wild Shape transformation?
Truesight can see through Wild Shape
The spell true seeing gives you truesight, the description of which says:
perceive the original form of a shapechanger or a creature that is transformed by magic.
and Wild Shape says:
[...] you can use your action to magically assume the shape of a beast that you have seen before.
Since the druid is transformed by magic (though not by a spell), truesight can see through it.
Note: dispel magic still doesn't work on wild shape, not because it is not magical, but because it's not a spell. Dispel magic has no effect on magic things that are not spells.
Any spells of 3rd level or lower on the target ends.