Fix #1529 by first checking that a property was found

[TheConstructor]

Issues

This pull request fixes #1529.

Description

In EndPathFinder validate, that a property was resolved, before checking if it is selected and suitable for aggregation.

Checklist (Uncheck if it is not completed)

• Test cases added
• Build and test with one-click build and test script passed

[TheConstructor]

@xuzhg do I need to do anything further to get this merged, or should I just wait if further questions arise?

[gathogojr]

[pull-request-quantifier-deprecated]

This PR has 37 quantified lines of changes. In general, a change size of upto 200 lines is ideal for the best PR experience!

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Quantification details

Label      : Extra Small
Size       : +28 -9
Percentile : 14.8%

Total files changed: 2

Change summary by file extension:
.cs : +28 -9

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[TheConstructor]

Seems I accidentally removed some reviewers ._. just wanted to inform, that I included the suggested change, and GitHub removed the other reviewers, upon me hitting 'Re-request review'

[gathogojr]

Seems I accidentally removed some reviewers ._. just wanted to inform, that I included the suggested change, and GitHub removed the other reviewers, upon me hitting 'Re-request review'

That's okay. Stale reviews are removed after new changes are pushed

[KenitoInc]

@TheConstructor Thanks for the PR. This fix will go out with the next release