Merge bitcoin/bitcoin#27707: ci, iwyu: Double maximum line length for includes

98ea798 ci, iwyu: Double maximum line length for includes (Hennadii Stepanov)

Pull request description:

  This PR makes the IWYU output in the CI 'tidy' task more useful by avoiding most cases where a comment ends with an ellipsis like that:
  ```
  #include "primitives/transaction.h"  // for CTxIn, CMutableTransaction, CTra...
  ```

ACKs for top commit:
  TheCharlatan:
    ACK 98ea798

Tree-SHA512: 25195ccb2095884b23586416b86999ebc42577c6d777abdbd176a704fa75c64deb91fa61cd91d570a5408dd459e930e53bc70d963b76c73fca7a800e74b1bdbf

Author: fanquake

ci/test/06_script_b.sh

@@ -166,6 +166,7 @@ if [ "${RUN_TIDY}" = "true" ]; then
   python3 "${DIR_IWYU}/include-what-you-use/iwyu_tool.py" \
            -p . "${MAKEJOBS}" \
            -- -Xiwyu --cxx17ns -Xiwyu --mapping_file="${BASE_BUILD_DIR}/bitcoin-$HOST/contrib/devtools/iwyu/bitcoin.core.imp" \
+           -Xiwyu --max_line_length=160 \
            2>&1 | tee /tmp/iwyu_ci.out
   cd "${BASE_ROOT_DIR}/src"
   python3 "${DIR_IWYU}/include-what-you-use/fix_includes.py" --nosafe_headers < /tmp/iwyu_ci.out