semantic-kernel .Net: Decode unicode escapes in TextMemoryPlugin recall

Motivation and Context

TextMemoryPlugin RecallAsync returns encoded data if the data is not English.

Description

I have added a method to decode unicode escape sequences.

Contribution Checklist

[ ] The code builds clean without any errors or warnings
[ ] The PR follows the SK Contribution Guidelines and the pre-submission formatting script raises no violations
[ ] All unit tests pass, and I have added new tests where possible
[ ] I didn't break anyone :smile:

Jul 02 '24 13:07 atiq-bs23

#6593 issue is related

Jul 02 '24 14:07 atiq-bs23

Closing this PR, since this change could be a breaking change for some customers, but I've created a new PR that allows customizing the JsonSerializer behavior to output unescaped characters to begin with. See #7098

Jul 04 '24 14:07 westey-m