[BUG] Phi Silica's input of double byte content may result in garbled characters during inference

Nobody has claimed this yet.

### Describe the bug

Describe the bug
Phi Silica's input of double byte content may result in garbled characters during inference, but there will be no such issue during inference before April 25, 2025. Did something happen?

To Reproduce
Steps to reproduce the behavior:
1.Open "AI Dev Gallery Dev"
2.Select "Gamples"
3.Click “Generate Text”
4.Input "你是谁" or “如何制作一份煎牛排”
5.Output contains garbled code

Expected behavior
Output contains garbled code

Screenshots


Please complete the following information:

App Version [version 0.0.1.0]:
Additional context
Windows 11 Home Insider Preview 24H2
Installed on:4/27/2025
OS build:26200.5570
Experience: Windows Feature Experience Pack 1000.26100.89.0

### Steps to reproduce the bug

Steps to reproduce the behavior:
1.Open "AI Dev Gallery Dev"
2.Select "Gamples"
3.Click “Generate Text”
4.Input "你是谁" or “如何制作一份煎牛排”
5.Output contains garbled code

### Expected behavior

_No response_

### Screenshots

_No response_

### NuGet package version

Windows App SDK 1.8 Experimental 2: 1.8.250515001-experimental2

### Packaging type

_No response_

### Windows version

_No response_

### IDE

Visual Studio 2022-preview

### Additional context

_No response_

Start by reproducing the issue in AI Dev Gallery Dev through the Phi Silica Generate Text flow with the Chinese inputs "你是谁" and "如何制作一份煎牛排". Compare the output with the behavior before April 25, 2025 and investigate the Phi Silica integration used by that entry point. Done means double-byte input produces readable inference output rather than garbled characters.

Written by the indexing model from the issue text.