Fix four issues for the WDAC logging feature

[daxian-dbw]

PR Summary

Fix #20785
Fix #20768

Address 4 issues for the WDAC logging feature:

• Hashtable-to-object conversion checking was wrong;
• A call to GetPowerShell and a call to GetSteppablePipeline show different behaviors when it's truly in Constrained mode, but the Audit feature didn't cover them.
• For the property/method access check in binder, fix the target name to also capture the target when targetValue is not a Type object.

PR Checklist

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• Breaking changes
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• User-facing changes
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• Testing - New and feature
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  • I have considered the user experience from a tooling perspective and don't believe tooling will be impacted.

[iSazonov]

@daxian-dbw Could you please look #20910 why you are in the context?

[SteveL-MSFT]

One non-blocking suggestion

[JamesWTruher]

just a couple of questions

[pull-request-quantifier-deprecated]

This PR has 83 quantified lines of changes. In general, a change size of upto 200 lines is ideal for the best PR experience!

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Label      : Small
Size       : +59 -24
Percentile : 33.2%

Total files changed: 7

Change summary by file extension:
.cs : +47 -24
.resx : +12 -0

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