.Net: fixed bug in TextSearchExtensions.cs: CreateGetSearchResults will not…

[migeyusu]

… take use of param "count" and "skip" by tool calls.

Motivation and Context

Fixed bug: method 'CreateGetSearchResults' has a bug that it could not take use of param "count" and "skip" by tool calls.

Description

I add following lines to capture params:

if (arguments.TryGetValue("count", out var countObj) && countObj is int countVal and > 0)
            {
                count = countVal;
            }

            if (arguments.TryGetValue("skip", out var skipObj) && skipObj is int skipVal and >= 0)
            {
                skip = skipVal;
            }

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 😄