fix: resolve unneeded error being thrown

[nperez0111]

resolves: https://blocknote-js.sentry.io/issues/32147104

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[YousefED]

nice, do you also know why this could happen? (i.e.: could it indicate there's a different bug or are there expected scenarios?)

[nperez0111]

nice, do you also know why this could happen? (i.e.: could it indicate there's a different bug or are there expected scenarios?)

The drag over handler is listening to the root element, so you are not guaranteed to be hovering over a table:

BlockNote/packages/core/src/extensions/TableHandles/TableHandlesPlugin.ts

Lines 186 to 189 in aed9fb5

	pmView.root.addEventListener(
	"dragover",
	this.dragOverHandler as EventListener
	);

in which case, the previous state should still be maintained for the drop to actually switch the rows