dashboard/app: show more crashes on bug page
dashboard/app: show more crashes on bug page

We have maxCrashes crashes without reproducers + arbitrary number
of crashes with reproducers. Crashes with reproducers can be stale.
Show more crashes.

google/syzkaller,google/syzkaller,xairy/syzkaller,google/syzkaller,google/syzkaller,xairy/syzkaller,xairy/syzkaller,google/syzkaller,xairy/syzkaller,google/syzkaller,xairy/syzkaller,xairy/syzkaller,xairy/syzkaller,google/syzkaller