Fix auto generated DedupGroups to be sensitive to module prefix

[jackkoenig]

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Type of Improvement

• Bugfix

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Release Notes

Also fix logic for naming PseudoModules which should ignore the prefix.

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[jackkoenig]

The careful reviewer will notice this changed from Module.currentModulePrefix + desiredName. It turns out that for Instances (which have an underlying PseudoModule, the currentModulePrefix is always empty so it's effectively a no-op. For other PseudoModules like ViewParent, there is no reason to have a prefix. I tweaked the code to make it more obvious that the prefix is not actually relevant to PseudoModules.