Make InternalSDKUtils AOT compatible in V4

[peterrsongg]

Description

In AWSSDK.Core 3.7.400.35 InternalSDKUtils was made AOT compatible by obsoleting InternalSDKUtils.ApplyValues and creating a new method InternalSDKUtils.ApplyValuesV2, which is AOT compatible. This PR removes the obsolete method in V4 and refactors existing methods to use V2 similar to in V3. Thanks @Dreamescaper for the suggestion!

Motivation and Context

Fixes #3497 in V4

Testing

Created a console app with set to true and published the console app and no warnings appeared. I even ran the .exe and it worked.

DRY_RUN passes

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My code follows the code style of this project
• My change requires a change to the documentation
• I have updated the documentation accordingly
• I have read the README document
• I have added tests to cover my changes
• All new and existing tests passed

License

• I confirm that this pull request can be released under the Apache 2 license