Merge bitcoin/bitcoin#35900: iwyu: Fix warnings in src/interfaces and treat them as errors

b3ff9c4d68 iwyu: Fix warnings in `src/interfaces` and treat them as errors (Hennadii Stepanov)
d564b0255f iwyu: Add temporary mapping to work around upstream bug (Hennadii Stepanov)

Pull request description:

  This PR continues the ongoing effort to enforce IWYU warnings.

  See [Developer Notes](https://github.com/bitcoin/bitcoin/blob/master/doc/developer-notes.md#using-iwyu).

ACKs for top commit:
  maflcko:
    review ACK b3ff9c4d68 🖋

Tree-SHA512: 9359854c7b6e6ec93022947e78ef57fc68728326df874371028997a550fd1b6ef08e4b09271163b9d5c921c9e01deadf92b0eb5ae3f620d797e4f9bdea8f4727

ci/test/03_test_script.sh

@@ -249,6 +249,7 @@ if [[ "${RUN_IWYU}" == true ]]; then
              -Xiwyu --max_line_length=160 \
              -Xiwyu --check_also='*/common/types\.h' \
              -Xiwyu --check_also='*/consensus/*\.h' \
+             -Xiwyu --check_also='*/interfaces/*\.h' \
              -Xiwyu --check_also='*/primitives/transaction_identifier\.h' \
              2>&1 || true
     } | tee /tmp/iwyu_ci.out