AnyFilter plugin can do this and much more:
http://www.johnrellis.com/lightroom/anyfilter.htm
I agree Adobe should support simple filters such as 'Has Develop Adjustments, but you'll find many other filters very useful. During migration from LR4 to LR5.0 Constrain to Crop and Spot Removal Feathering were removed from all my edited images. I used AnyFilter to locate these specific file edits and was able to correct them very quickly. You can create-your-own filters using numerous items with AnyFilter.