Don't rename main thread at process level

Set only the internal name.

Fixes #17036 for both `bitcoind` and `bitcoin-qt`.

src/bitcoind.cpp

@@ -45,7 +45,7 @@ static bool AppInit(int argc, char* argv[])
 
     bool fRet = false;
 
-    util::ThreadRename("init");
+    util::ThreadSetInternalName("init");
 
     //
     // Parameters