Merge bitcoin/bitcoin#19064: refactor: Cleanup thread ctor calls

792be53d3e refactor: Replace std::bind with lambdas (Hennadii Stepanov)
a508f718f3 refactor: Use appropriate thread constructor (Hennadii Stepanov)
30e4448215 refactor: Make TraceThread a non-template free function (Hennadii Stepanov)

Pull request description:

  This PR does not change behavior.
  Its goal is to improve readability and maintainability of the code.

ACKs for top commit:
  jnewbery:
    utACK 792be53d3e
  jonatack:
    tACK 792be53d3e
  MarcoFalke:
    cr ACK 792be53d3e

Tree-SHA512: a03142f04f370f6bc02bd3ddfa870819b51740fcd028772241d68c84087f95a2d78207cbd5edb3f7c636fcf2d76192d9c59873f8f0af451d3b05c0cf9cf234df

src/index/base.cpp

@@ -8,7 +8,7 @@
 #include <node/ui_interface.h>
 #include <shutdown.h>
 #include <tinyformat.h>
-#include <util/system.h>
+#include <util/thread.h>
 #include <util/translation.h>
 #include <validation.h> // For g_chainman
 #include <warnings.h>
@@ -349,8 +349,7 @@ void BaseIndex::Start()
         return;
     }
 
-    m_thread_sync = std::thread(&TraceThread<std::function<void()>>, GetName(),
-                                std::bind(&BaseIndex::ThreadSync, this));
+    m_thread_sync = std::thread(&util::TraceThread, GetName(), [this] { ThreadSync(); });
 }
 
 void BaseIndex::Stop()