Merge "Correct the comments on property exclude_kotlinc_generated_file, which...

Merge "Correct the comments on property exclude_kotlinc_generated_file, which defaults to false actually." am: 3842a91f am: 702c570b

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/1947488

Change-Id: If10e6cca4c3ab157b061b2808cc5d0828b46e7c2