refactor(geometry): Surface merging returns ordering

[paulgessinger]

This PR updates the surface merging for Cylinders and Discs:

1. Surface merging returns their relative "ordering", e.g. for two cylinders a and b, the merging will return whether a was at lower $z$ or $r\phi$ values than b. The same applies for discs. For merged surfaces in $\phi$ or $r\phi$ direction which cover the full azimuth after merging, the ordering is preserving: a + b will return a, b, and b + a will return b, a accordingly.
2. Cylinders and discs support external rotation: with this option set, the merged surface will always have an average $\phi = 0$, meaning that no additional rotation is applied on top of the rotation by the transform. This is needed for well-defined portal merging
3. Remove the geometry context argument from merging. Surface merging is strictly only supported for surfaces without detector elements, which is checked by the methods. After this is established, it's safe to access the nominal transform directly, without using the geometry context mechanism (it won't be used anyway without detector elements).
4. Improved coverage of test cases, including a number of edge cases, and associated bug fixes.

[github-actions]

📊: Physics performance monitoring for 7ba6d9b

Full contents

physmon summary

• ✅ CKF truth_smeared
• ✅ IVF truth_smeared
• ✅ AMVF truth_smeared
• ✅ Track Summary CKF truth_smeared
• ✅ Seeding truth_estimated
• ✅ CKF truth_estimated
• ✅ IVF truth_estimated
• ✅ AMVF truth_estimated
• ✅ Track Summary CKF truth_estimated
• ✅ Seeding seeded
• ✅ CKF seeded
• ✅ IVF seeded
• ✅ AMVF seeded
• ✅ AMVF (+grid seeder) seeded
• ✅ Track Summary CKF seeded
• ✅ Seeding orthogonal
• ✅ CKF orthogonal
• ✅ IVF orthogonal
• ✅ AMVF orthogonal
• ✅ Track Summary CKF orthogonal
• ✅ Ambisolver seeded
• ✅ Ambisolver orthogonal
• ✅ Seeding ttbar
• ✅ CKF ttbar
• ✅ Ambisolver
• ✅ Track Summary CKF ttbar
• ✅ AMVF ttbar
• ✅ AMVF (+grid seeder) ttbar
• ✅ Particles ttbar
• ✅ Vertices ttbar
• ✅ Truth tracking (GSF)
• ✅ Truth tracking
• ✅ Truth tracking (GX2F)
• ✅ Particles fatras
• ✅ Particles geant4

[andiwand]

had a quick look - no objections from my side 👍

[sonarcloud]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
59.1% Coverage on New Code
12.5% Duplication on New Code

See analysis details on SonarCloud

[acts-project-service]

🔴 Athena integration test results [cc3f620]

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status	job	report
🟢	report_pull_request
🟢	run_art_test: test_data18_13TeV_1000evt
🟢	run_art_test: test_ttbarPU40_reco
🟢	test_ActsDumpGeometryIdentifiers
🔴	test_ActsCheckObjectCountsCachedWorkflow
🔴	test_ActsCheckObjectCountsWorkflow
🟢	test_ActsEFTrackFit
🟢	test_ActsPersistifySeeds
🟢	test_ActsBenchmarkWithSpot
🟢	test_ActsAnalogueClustering
🟢	test_ActsWorkflowHeavyIons
🟢	test_ActsWorkflowFastTracking
🟢	test_ActsWorkflowCached
🟢	test_ActsWorkflow
🟢	test_ActsValidateAmbiguityResolution
🟢	test_ActsValidateResolvedTracks
🟢	test_ActsValidateTracks
🟢	test_ActsValidateActsCoreSpacePoints
🟢	test_ActsValidateActsSpacePoints
🟢	test_ActsValidateSeeds
🟢	test_ActsValidateOrthogonalSeeds
🟢	test_ActsValidateClusters
🟢	test_ActsPersistifyEDM
🟢	test_ActsGSFRefitting
🟢	test_ActsKfRefitting
🟢	test_ActsExtrapolationAlgTest
🟢	test_ActsITkTest
🟢	run_workflow_tests_run4_mc
🟢	run_workflow_tests_run2_mc
🟢	run_workflow_tests_run2_data
🟢	run_workflow_tests_run3_mc
🟢	run_workflow_tests_run3_data
🟢	run_unit_tests