AdfsRelyingPartyTrust: Fix Multiple AllowedClientTypes Property

[X-Guardian]

Pull Request (PR) description

Fix processing multiple AllowedClientTypes in the AdfsRelyingPartyTrust resource.

Task list

• [x] Added an entry to the change log under the Unreleased section of the file CHANGELOG.md. Entry should say what was changed and how that affects users (if applicable), and reference the issue being resolved (if applicable).
• [ ] Resource documentation added/updated in README.md.
• [ ] Resource parameter descriptions added/updated in README.md, schema.mof and comment-based help.
• [ ] Comment-based help added/updated.
• [ ] Localization strings added/updated in all localization files as appropriate.
• [ ] Examples appropriately added/updated.
• [x] Unit tests added/updated. See DSC Community Testing Guidelines.
• [ ] Integration tests added/updated (where possible). See DSC Community Testing Guidelines.
• [x] New/changed code adheres to DSC Community Style Guidelines.

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This change is 

[codecov[bot]]

Codecov Report

Merging #69 (425421b) into main (e4f22cf) will not change coverage. The diff coverage is 100%.

@@         Coverage Diff         @@
##           main    #69   +/-   ##
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  Coverage    98%    98%           
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  Files        16     16           
  Lines      2139   2139           
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  Hits       2103   2103           
  Misses       36     36