fix: macOS ScrollView resize and content inset behavior

[Saadnajmi]

Summary

• preserve macOS ScrollView position during live resize in root and surface hosting views
• align Fabric ScrollView contentInset and contentOffset behavior with the existing macOS scrollview implementation
• prevent resize-driven scroll drift in the macOS Paper ScrollView path

Test Plan

• Build RNTester-macOS
• Verify RNTester runs normally
• Manually resize windows containing ScrollView content and confirm content offset remains stable

[changeset-bot]

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Latest commit: f11265d

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