merge_pr_51865

[ReferenceTarget] Split property reflection tests to avoid timeout flakiness

This test is flaky because it has a high number of subtests and is
bumping against the timeout threshold. Avoid this by splitting it into
two tests.

Bug: 375337253
Change-Id: I9a79e0f05d4c1f8710535efa420f4cf4c6316022
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6433006
Commit-Queue: Dan Clark [email protected]
Reviewed-by: Alex Keng [email protected]
Cr-Commit-Position: refs/heads/main@{#1442917}