Exclude BackgroundDexOptimizationTest from CtsCompilationTestCases.

This CL splits the original test suite into two:
- CompilationTestCases: The full test suite.
- CtsCompilationTestCases: A subset of tests to run in CTS, annotated
  with @CtsTestCase.

Bug: 247645923
Test: atest CtsCompilationTestCases
Test: atest CompilationTestCases
Change-Id: I4b34fbc66e66a77816651f87fc1e623c808bd5ea
Merged-In: I4b34fbc66e66a77816651f87fc1e623c808bd5ea
(cherry picked from commit c9a88c90e4bdede23dbec9760e344c6327d90cd3)