Unused Property Check false positive - Title flagged as unused during packing

[JanKrivanek]

Context

A case that seems as a false positive of the BC0203

Repro steps

1. Create project:

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
	  <OutputType>Library</OutputType>
	  <TargetFramework>net8.0</TargetFramework>
	  <IsPackable>true</IsPackable>
	  <!-- packaging properties -->
	  <PackageVersion>1.2.3</PackageVersion>
	  <Title>Some library</Title>
	  <authors>Microsoft</authors>
	  <owners>Microsoft</owners>
	  <PackageId>SomeLib</PackageId>
  </PropertyGroup>
</Project>

2. Build: dotnet pack /check /v:d /bl
3. Observe the owners property being flagged - which is correct:

C:\repro\TestProj.csproj (11,5): https://aka.ms/buildcheck/codes#BC0203 - Property: [owners] was declared/initialized, but it was never used.

4. Observe the Title property being flagged - which is false positive:

C:\repro\TestProj.csproj (11,5): https://aka.ms/buildcheck/codes#BC0203 - Property: [Title] was declared/initialized, but it was never used.

5. Check the binlog - that the property is being dereferenced:
   

Repro Files

Repro.zip

[JanKrivanek]

team triage: it'd would be great to at least understand if it's because usage of property within a task parameter

[JanKrivanek]

This is the case of "project build calls MSBuild task to get result of a different target from project"

The entry project+target combination uses the properties as expected. But the called builds do not use those properties.

We'd probably need to skip the targets called via MSBuild task or CallTarget task for the purpose of this check