Fix .NET 10 Android build failure by disabling trimming

[google-labs-jules]

This PR disables all trimming and code shrinking for the Android project. This resolves a fatal AOT compilation error during the release build where MessagePack.dll was unable to resolve System.Collections.Generic.PriorityQueue'2 in System.Private.CoreLib when trimming was enabled on .NET 10.

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PR created automatically by Jules for task 1800311256488179439 started by @winnerspiros

[google-labs-jules]

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