Update D8 R8 to 8.9.10-dev am: 300e4f5b37

Original change: https://android-review.googlesource.com/c/platform/prebuilts/r8/+/3401459

Change-Id: I31f8a54bb34508c28cea2b013e68a0bf67d15574
Signed-off-by: Automerger Merge Worker <[email protected]>