Don't skip boot-check for auto-qual by default

Testing instructions:
1. Go to Android > AutoQual > Schedule
2. The skip boot prerequisite advanced setting should be checked-off by default

Change-Id: I2db25fd0fb9357f524a8194aa6431734da02487c
Bug: b:568305856
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/satlab/+/8663249
Reviewed-by: Rafał Gaweł <rafalgawel@google.com>
Reviewed-by: Tomasz Jakubowski <jakubowskit@google.com>
Auto-Submit: Kuba Birecki <kbirecki@google.com>
Commit-Queue: Kuba Birecki <kbirecki@google.com>
Tested-by: Kuba Birecki <kbirecki@google.com>