set maxMatchedFileSize as int64 for 32-bit compilation

[amenocal]

Description

This pull request makes a small change to the pkg/archive/stream.go file to explicitly specify the type of the maxMatchedFileSize constant as int64. This helps with cross-compiles for 32-bit targets (386, arm) where Go's int is 32 bits (max 2147483647)

failed run: https://github.com/mona-actions/gh-commit-remap/actions/runs/28826036404

Checklist

• I have added the appropriate label to this PR according to the type of change
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests

Additional Context

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