fix: duplicate move lock files

[LingyuCoder]

Summary

1. should not generate move.lock for every scope
2. add lock for removing
3. add test case for multiple scopes

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generate by copilot

This pull request refactors the scope management and file handling logic in the rspack_storage crate. The changes aim to simplify the code, improve efficiency, and ensure better error handling. The key changes include modifying the scope writing strategy, adding new utility functions, and updating test cases accordingly.

Scope Management and File Handling Improvements:

• crates/rspack_storage/src/pack/manager/mod.rs: Refactored the save_scopes function to streamline the process by merging the before_all and after_all steps and introducing the merge_changed method. [1] [2]
• crates/rspack_storage/src/pack/strategy/mod.rs: Updated the ScopeWriteStrategy trait to use the new merge_changed method and modified the before_all and after_all methods to handle multiple scopes. [1] [2]

New Utility Functions:

• crates/rspack_storage/src/pack/strategy/split/handle_file.rs: Added functions prepare_scope, prepare_scope_dirs, write_lock, remove_lock, and refactored move_files and recovery_move_lock to improve file handling. [1] [2] [3] [4] [5]

Test Case Updates:

• crates/rspack_storage/src/pack/strategy/split/util.rs: Introduced the flag_scope_wrote function to update the scope's metadata and modified test utilities to use the new scope preparation and merging logic. [1] [2] [3]
• crates/rspack_storage/src/pack/strategy/split/validate_scope.rs: Updated tests to incorporate the new scope preparation and merging methods, ensuring they align with the refactored logic. [1] [2] [3]

Miscellaneous Changes:

• crates/rspack_storage/src/pack/strategy/split/write_scope.rs: Adjusted the SplitPackStrategy implementation to use the new utility functions for file operations and scope management. [1] [2]
• crates/rspack_storage/tests/build.rs: Renamed a test function for clarity.

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

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