[analyzer] Prevent triplicate warnings for `sarif-html` (#158112)

When `-analyzer-output=sarif-html` is specified, the analyzer was
reporting each warning to the console three times. This is because the
code to create the diagnostic consumers for `sarif-html` was calling the
code for `sarif` and `html` separately, each of which also creates its
own console text consumer. Then the `sarif-html` code itself created a
third.

The fix is to factor out the creation of the SARIF and HTML consumers
from the text consumers, so `sarif-html` just calls the code to create
the SARIF and HTML consumers without the text consumers.

The same fix applies for `plist-html`.

I've updated one of the SARIF tests to specify `sarif-html`. This test
would fail in the regular `-verify` validation due to the triplicated
warnings, but now passes with my fix.

Fixes #158103 
rdar://160383710
9 files changed
tree: 4970b82038742be9cfe15713e6c0227bc6d0d6d8
  1. .ci/
  2. .github/
  3. bolt/
  4. clang/
  5. clang-tools-extra/
  6. cmake/
  7. compiler-rt/
  8. cross-project-tests/
  9. flang/
  10. flang-rt/
  11. libc/
  12. libclc/
  13. libcxx/
  14. libcxxabi/
  15. libsycl/
  16. libunwind/
  17. lld/
  18. lldb/
  19. llvm/
  20. llvm-libgcc/
  21. mlir/
  22. offload/
  23. openmp/
  24. orc-rt/
  25. polly/
  26. runtimes/
  27. third-party/
  28. utils/
  29. .clang-format
  30. .clang-format-ignore
  31. .clang-tidy
  32. .git-blame-ignore-revs
  33. .gitattributes
  34. .gitignore
  35. .mailmap
  36. CODE_OF_CONDUCT.md
  37. CONTRIBUTING.md
  38. LICENSE.TXT
  39. pyproject.toml
  40. README.md
  41. SECURITY.md
README.md

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