In RecordVirtualBytecodeArrayDetails() check whether the BytecodeArray
has a source position table before accessing it, otherwise it will just
crash with --enable-lazy-source-positions.

Bug: v8:8510
Change-Id: I1250e89faf836a8d5976ca98c14b6b7314bacb98
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1559730
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60692}