Temporarily exclude `JniCompilerTests` in in Mainline Presubmits.

Test cases `JniCompilerTests` from ART gtest
`art_standalone_compiler_tests` are currently failing because of
linking issues on configurations where the copies of `libunwindstack`
in the non-Mainline-updatable Android platform and in the ART Mainline
Module differ (see b/247108425).

This is currently affecting Mainline Presubmit runs. Temporarily
exlude these test cases from this configuration to minimize noise in
automated runs while we investigate.

Output of `art/test/utils/regen-test-files`:

  $ art/test/utils/regen-test-files
  Generated Blueprint files for 675 ART run-tests out of 974 (69%).
  Generated TEST_MAPPING entries for 415 ART run-tests out of 974 (42%):
    415 ART run-tests (100%) in `mainline-presubmit` test group.
     21 ART gtests (95%) in `mainline-presubmit` test group.
    415 ART run-tests (100%) in `presubmit` test group.
     22 ART gtests (100%) in `presubmit` test group.

Test: atest --test-mapping art:mainline-presubmit
Bug: 247108425
Change-Id: If0b2f246cf99b071d8aaf5efeb7d70fd2b732c6c
2 files changed