[TableGen][DecoderEmitter] Improve conflicts dump (#154001)

* Print filter stack in non-reversed order.
* Print encoding name to the right of encoding bits to deal with
alignment issues.
* Use the correct bit width when printing encoding bits.

Example of old output:
```
		01000100........
		01000...........
		0100............
		................
	tADDhirr 000000000000000001000100________
	tADDrSP 000000000000000001000100_1101___
	tADDspr 0000000000000000010001001____101
```

New output:
```
    ................
    0100............
    01000...........
    01000100........
    01000100________  tADDhirr
    01000100_1101___  tADDrSP
    010001001____101  tADDspr
```
2 files changed
tree: 6b2f5c407da8d233a56f227866305d6486cdcc25
  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. polly/
  25. runtimes/
  26. third-party/
  27. utils/
  28. .clang-format
  29. .clang-format-ignore
  30. .clang-tidy
  31. .git-blame-ignore-revs
  32. .gitattributes
  33. .gitignore
  34. .mailmap
  35. CODE_OF_CONDUCT.md
  36. CONTRIBUTING.md
  37. LICENSE.TXT
  38. pyproject.toml
  39. README.md
  40. SECURITY.md
README.md

The LLVM Compiler Infrastructure

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