[wasm] AOT tests failing due to an incorrect path for `ILLink.Descriptors.Serialization.xml`

[radical]

Started failing with this rolling build.

ILLink : error IL1033: XML descriptor file 'D:\a\_work\1\s\eng\testing\ILLinkDescriptors\XmlSerializer\ILLink.Descriptors.Serialization.xml' could not be found'. [D:\a\_work\1\s\src\libraries\System.Private.Xml\tests\System.Private.Xml.Tests.csproj]
##[error]ILLink(0,0): error IL1033: (NETCORE_ENGINEERING_TELEMETRY=Build) XML descriptor file 'D:\a\_work\1\s\eng\testing\ILLinkDescriptors\XmlSerializer\ILLink.Descriptors.Serialization.xml' could not be found'.
D:\a\_work\1\s\.packages\microsoft.net.illink.tasks\7.0.100-1.22451.5\build\Microsoft.NET.ILLink.targets(86,5): error NETSDK1144: Optimizing assemblies for size failed. Optimization can be disabled by setting the PublishTrimmed property to false. [D:\a\_work\1\s\src\libraries\System.Private.Xml\tests\System.Private.Xml.Tests.csproj]
##[error].packages\microsoft.net.illink.tasks\7.0.100-1.22451.5\build\Microsoft.NET.ILLink.targets(86,5): error NETSDK1144: (NETCORE_ENGINEERING_TELEMETRY=Build) Optimizing assemblies for size failed. Optimization can be disabled by setting the PublishTrimmed property to false.

This broke in #75499 and it didn't get caught by CI because the EAT tests regressed to be running only smoke tests recently. Fix for that issue is #75516 .

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Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	0	0

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Issue Details

---

Started failing with this rolling build.

ILLink : error IL1033: XML descriptor file 'D:\a\_work\1\s\eng\testing\ILLinkDescriptors\XmlSerializer\ILLink.Descriptors.Serialization.xml' could not be found'. [D:\a\_work\1\s\src\libraries\System.Private.Xml\tests\System.Private.Xml.Tests.csproj]
##[error]ILLink(0,0): error IL1033: (NETCORE_ENGINEERING_TELEMETRY=Build) XML descriptor file 'D:\a\_work\1\s\eng\testing\ILLinkDescriptors\XmlSerializer\ILLink.Descriptors.Serialization.xml' could not be found'.
D:\a\_work\1\s\.packages\microsoft.net.illink.tasks\7.0.100-1.22451.5\build\Microsoft.NET.ILLink.targets(86,5): error NETSDK1144: Optimizing assemblies for size failed. Optimization can be disabled by setting the PublishTrimmed property to false. [D:\a\_work\1\s\src\libraries\System.Private.Xml\tests\System.Private.Xml.Tests.csproj]
##[error].packages\microsoft.net.illink.tasks\7.0.100-1.22451.5\build\Microsoft.NET.ILLink.targets(86,5): error NETSDK1144: (NETCORE_ENGINEERING_TELEMETRY=Build) Optimizing assemblies for size failed. Optimization can be disabled by setting the PublishTrimmed property to false.

This broke in #75499 and it didn't get caught by CI because the EAT tests regressed to be running only smoke tests recently. Fix for that issue is #75516 .

Author:	radical
Assignees:	radical
Labels:	arch-wasm, blocking-clean-ci
Milestone:	-