Re-enable skipped test: ImageList_FinalizerReleasesNativeHandle_ReturnsExpected

[vladimir-krestov]

• .NET Core Version: 7.0

• Have you experienced this same bug with .NET Framework?: No

Problem description:

• ImageList_FinalizerReleasesNativeHandle_ReturnsExpected unit test fails sometime in x86 Debug CI build for successful PRs, that blocking deployment of fixes into sdk.

Stack trace (System.Windows.Forms.UI.IntegrationTests_net7.0_x86.log)

System.Windows.Forms.UITests.ImageListTests.ImageList_FinalizerReleasesNativeHandle_ReturnsExpected [FAIL]
      Assert.Equal() Failure
      Expected: 32
      Actual:   31
      Stack Trace:
        /_/src/System.Windows.Forms/tests/IntegrationTests/UIIntegrationTests/ImageListTests.cs(47,0): at System.Windows.Forms.UITests.ImageListTests.ImageList_FinalizerReleasesNativeHandle_ReturnsExpected()
      Output:
        GDI handles before: 32
        GDI handles after: 31

Expected behavior:

• All correct tests pass every time.

Minimal repro:

• Run unit tests on x86 environment (or create a PR with changes, CI build will do it)

[dreddy-work]

This is still an issue after #8772. Keeping it disabled to investigate further.