[clang] [clang][analyzer] Move StreamChecker out of the alpha package. (PR #89247)

[Balázs Kéri via cfe-commits]

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@@ -48,7 +48,7 @@ <h1>Open Projects</h1>
       <p><i>(Difficulty: Medium)</i></p></p>
       </li>
 
-      <li><code>alpha.unix.StreamChecker</code>
+      <li><code>unix.StreamChecker</code>
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balazske wrote:

This section should be removed too. The problem is still not solved in the mentioned way ("delayed split"). I do not see how this could work to find problems where the result of an operation is not checked at all. Or if a split is done only when the result is used in any way, there may be still many checker warnings for read operations.

https://github.com/llvm/llvm-project/pull/89247