[csharp][generichost] Correct docs

[devhl-labs]

Minor docs correction

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Summary by cubic

Corrects the XML docs in the C# generichost JsonConverter template by removing NotImplementedException from the Write and WriteProperties method comments, since those methods throw JsonException when a model has a null value for a non-nullable JSON property. No behavior changes; the affected samples were regenerated.

^{Written for commit 53c8dc4. Summary will update on new commits.}

[cubic-dev-ai]

1 issue found across 1821 files

Prompt for AI agents (unresolved issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="samples/client/petstore/csharp/generichost/latest/UseDateTimeOffset/src/Org.OpenAPITools/Model/AppleReq.cs">

<violation number="1" location="samples/client/petstore/csharp/generichost/latest/UseDateTimeOffset/src/Org.OpenAPITools/Model/AppleReq.cs:172">
P3: This description implies the writer throws for null values in any non-nullable JSON property, but a null `Cultivar` is passed to `WriteString` without a guard. Document the explicit-null `mealy` condition on both methods instead.</violation>
</file>

<sub>Note: This PR contains a large number of files. cubic selects up to 200 of the highest-priority eligible files for this review, so some files may not have been reviewed.

Re-trigger cubic</sub>

[cubic-dev-ai]

No issues found across 1821 files

<sub>Note: This PR contains a large number of files. cubic selects up to 200 of the highest-priority eligible files for this review, so some files may not have been reviewed.

Re-trigger cubic</sub>