Document behaviour of ConcurrentDictionary AddOrUpdate when factory funcs throw

### Type of issue

Missing information

### Description

The ConcurrentDictionary AddOrUpdate() docs don't explain what happens if the factory funcs throw. The implementation appears to abort the action and leave the dictionary unchagned. Is this behaviour guaranteed?

### Page URL

https://learn.microsoft.com/en-us/dotnet/api/system.collections.concurrent.concurrentdictionary-2.addorupdate?view=net-10.0

### Content source URL

https://github.com/dotnet/dotnet-api-docs-temp/blob/live/xml/System.Collections.Concurrent/ConcurrentDictionary`2.xml

### Document Version Independent Id

125a4bf6-81d6-6239-c403-274b4ced126f

### Platform Id

5191d709-dd5b-3d43-cae2-6d630ddcf75e

### Article author

@dotnet-bot

Open the linked ConcurrentDictionary`2.xml source and locate the AddOrUpdate() documentation entry. Read the existing API wording, then verify the documented behavior for exceptions from both factory functions against the current implementation or API contract. Done means the page clearly states what happens to the operation and dictionary when a factory throws.

Written by the indexing model from the issue text.