Polyglot Notebook: [NetTestingE2E][GB18030] Some GB18030 strings display incorrect in Output, show as Unicode char (e.g. \uD86D\uDCE7...).

[v-hozha1]

Describe the bug: Some GB18030 strings (e.g. 𫓧𬬮U1U2) display as \uD86D\uDCE7\uD872\uDF2E\uE05E\uE05F\uE070\uE081U1\uE2C1\uE2C2\uE2C3\uE2D4\uE2E5U2\uE546\uE547\uE548\uE559\uE55A in Output.

Testing Data: Level2 GB18030-2022 Testing Data for medium large amount cases-GB18030 Group3:舰剑饯渐溅建僵齄鿀龬ɑπ㈢Ｑ𫓧𬬮U1U2U3()ao㩹㩺㩻㩼㩽䀃E9;cz囌囍囎囐囓囑囒㏄㏑⿲⿳⿻〇cz珸珹䲟珺珻珼陫

Note:

1. Repro VM: 172.16.194.187
2. Test on Win 11 24H2 ZH-CN (Chinese (Simplified) Loc OS)

Pre-steps: 1.On Chinese OS, install VSCode and dotnet-interactive-vscode-1.0.6323011.vsix extension component. 2. Install the language package of Chinese (Simplified) from VSCode -> Change the display language of VSCode to Chinese (Simplified)

Steps:

1. Ctrl+Shift+P => "Polyglot Notebook: Create new blank notebook"
2. Select "Create as .dib" ->Select "C#"
3. Set the cell contents as following and execute cell

var value = new { Name = "Developer舰剑饯渐溅建僵齄鿀龬ɑπ㈢Ｑ𫓧𬬮U1U2U3()ao㩹㩺㩻㩼㩽䀃E9;cz囌囍囎囐囓囑囒㏄㏑⿲⿳⿻〇cz珸珹䲟珺珻珼陫", Salary = 42 }; value.Display("text/html", "application/json");

Actual Results: Some GB18030 strings (e.g. 𫓧𬬮U1U2) display as \uD86D\uDCE7\uD872\uDF2E\uE05E\uE05F\uE070\uE081U1\uE2C1\uE2C2\uE2C3\uE2D4\uE2E5U2\uE546\uE547\uE548\uE559\uE55A in Output.

Expected Results: All strings should display correctly in VSCode UI.

Please complete the following:

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