Merge bitcoin/bitcoin#33549: ci: Add macOS cross task for arm64-apple-darwin

fad5a7101c ci: Add macOS cross task for arm64 (MarcoFalke)
fa8c750a0a ci: Refactor get_previous_releases step in win-test-cross task (MarcoFalke)

Pull request description:

  Cross compiling to Intel macOS seems fine, but it would be good to cross compile to arm64-apple-darwin as well.

  Further reading:

  * https://en.wikipedia.org/wiki/Mac_transition_to_Apple_silicon#Timeline.
  * It is harder to find native Intel macOS hardware (E.g. GitHub is in the process of dropping it: https://github.blog/changelog/2025-07-11-upcoming-changes-to-macos-hosted-runners-macos-latest-migration-and-xcode-support-policy-updates/#macos-13-is-closing-down)

ACKs for top commit:
  Sjors:
    utACK fad5a7101c
  hodlinator:
    crACK fad5a7101c

Tree-SHA512: ce96ac9f68f594584dc910555bd34590084e3e45ca02a22d4949e88bb569de3bf87ebf6b5c6718ae82d7750a98212b72f6dab80bddfc9652a57180fbdda97f42

.github/workflows/ci.yml

@@ -432,8 +432,7 @@ jobs:
           echo "PREVIOUS_RELEASES_DIR=${{ runner.temp }}/previous_releases" >> "$GITHUB_ENV"
 
       - name: Get previous releases
-        working-directory: test
-        run: ./get_previous_releases.py --target-dir $PREVIOUS_RELEASES_DIR
+        run: ./test/get_previous_releases.py --target-dir $PREVIOUS_RELEASES_DIR
 
       - name: Run functional tests
         env:
@@ -471,12 +470,18 @@ jobs:
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_native_asan.sh'
 
-          - name: 'macOS-cross, gui, no tests'
+          - name: 'macOS-cross to arm64'
             cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-sm'
             fallback-runner: 'ubuntu-24.04'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_mac_cross.sh'
 
+          - name: 'macOS-cross to x86_64'
+            cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-sm'
+            fallback-runner: 'ubuntu-24.04'
+            timeout-minutes: 120
+            file-env: './ci/test/00_setup_env_mac_cross_intel.sh'
+
           - name: 'No wallet, libbitcoinkernel'
             cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-sm'
             fallback-runner: 'ubuntu-24.04'