Switch macOS builds to Ubuntu in CI

[nikobockerman]

No description provided.

[Copilot]

Pull request overview

This PR migrates the primary CI build matrix from macOS to Ubuntu while retaining a single macOS build configuration for release testing. The change reduces the macOS build coverage from multiple compiler/library combinations to just one (clang with libstdc++ in release mode), while expanding Ubuntu builds to cover the full matrix of compiler and library configurations.

Changes:

• Changed the primary build matrix OS from macOS to Ubuntu
• Restructured the workflow matrix to include Ubuntu builds with both clang and gcc compilers
• Updated CMake presets to reflect the new OS priorities, removing macOS-specific debug and gcc configurations

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
.github/workflows/cpp-build-test-run.yaml	Modified build matrix to use Ubuntu as primary OS and adjusted the include matrix to swap OS-specific configurations
.github/files/CMakeUserPresets.json	Reorganized and renamed CMake presets to prioritize Ubuntu configurations, removing most macOS preset variants

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[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated no new comments.

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[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated no new comments.

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