[AGG] Update test expectations for odd-sized dashed line array change

Update test expectations after changes in
https://pdfium-review.googlesource.com/c/pdfium/+/138390. The new test
expectations are now correct.

Bug: 370546365
Change-Id: I14338ae071ee99bb7c1e60d94b7887a5fc140ae8
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium_tests/+/138830
Reviewed-by: Lei Zhang <thestig@chromium.org>