Camera2 CTS: Fix tests that assume matching sizes between formats

- PerformanceTest#testSingleCapture: Don't use JPEG list for selecting a YUV size
- RecordingTest#testVideoSnapshot/testBurstVideoSnapshot: Don't assume a given
  recording size has a matching JPEG size for LEGACY devices.

Bug: 17629259
Change-Id: I9da50b32627653c9ecea1b962602a9dff5e5c848