Linker: fix initialization order of main module

[Arshia001]

This PR fixes the initialization order for main modules in the linker.

Previously, the main function's relocations would run before pending globals were resolved, which would result in the main module reading incorrect values while applying its relocations.

[Copilot]

Pull Request Overview

This PR refactors the main module linking process by extracting initialization logic into a separate method. The change improves code structure by allowing the main module and side modules to share the same initialization code path.

Key changes:

• Extracts module initialization logic into a new initialize_new_modules method
• Refactors finalize_link_operation to call the new initialize_new_modules method
• Updates main module linking to directly call finalize_pending_globals and initialize_new_modules instead of the combined finalize_link_operation

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[zebreus]

You split up finalize_link_operation into finalize_link_operation and initialize_new_modules, because the relocation functions need to be called after finalizing the globals. Seems like the correct fix for the issue