Make plotters-backend available to product and vendor am: 9a88beacaf am: da7188b551 am: 1ab7a04446 am: bb807b837b

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/plotters-backend/+/2475780

Change-Id: Ib72c67f882b04858e0bb24790efc2189c95aca0f
Signed-off-by: Automerger Merge Worker <[email protected]>