ci: name compiler binaries in *-compiler-binary; drop forwarded-deps-outputs

[mcocdawc]

• HPC legs: cc/cxx become c-compiler-binary/cxx-compiler-binary.
• forwarded-deps-outputs goes: it only fed a build action, and build-hpc runs a job-script.

Rendered scripts are unchanged for every existing leg, and so are the generated cross-repo-trigger*.yml; the regenerate bot brings trigger-downstream*.yml up to date. Needed before ecmwf/ci-infrastructure#103, which removes these fields; it works on ci-infrastructure main today.

🤖 Generated with Claude Code

🌦️ >> Documentation << 🌦️
https://sites.ecmwf.int/docs/dev-section/ecflow/pull-requests/PR-475

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 56.25%. Comparing base (e9f7378) to head (9859d09).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #475      +/-   ##
===========================================
+ Coverage    56.23%   56.25%   +0.02%     
===========================================
  Files         1268     1268              
  Lines       105366   105366              
  Branches     15373    15374       +1     
===========================================
+ Hits         59248    59274      +26     
+ Misses       46118    46092      -26     

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.