CI: fail when an example or test build fails (osx, linux64, msys2) - #8590

Problem

build-macos (osx, makefiles) is green on master, but allAddonsExample fails to link in it. From master's run on 13 Oct:

Undefined symbols for architecture arm64:
  "kleidicv::hal::bgr_to_bgr(...)", referenced from: ... in opencv.a
clang++: error: linker command failed with exit code 1
make[1]: *** [bin/allAddonsExample_debug] Error 1

The projectGenerator CI builds the same project with Xcode and fails, which is how this showed up.

scripts/ci/osx/run_tests.sh, linux64/run_tests.sh and msys2/run_tests.sh all have set -e commented out (since #7947):

• osx: the emptyExample and allAddonsExample builds aren't checked at all.
• linux64 / msys2: a failed test build only shows up later, as a missing binary.

Change

Each make in those scripts goes through build_or_fail. If a build fails, it stops the job with a GitHub error annotation naming it:

::error title=Build failed::make -j2 Debug failed in examples/templates/allAddonsExample

The tests' own exit-code checks are unchanged.

Expected result

build-macos (osx, makefiles) will fail on this PR until the macOS OpenCV package is fixed in apothecary. Its opencv.a uses KleidiCV, but libkleidicv isn't in the xcframework. The fix is to build it with -DWITH_KLEIDICV=OFF, or to ship libkleidicv. That failure is the point: it has been hidden until now.