Merge bitcoin/bitcoin#25472: build: Increase MS Visual Studio minimum version

630c1711b4 refactor: Drop no longer needed `util/designator.h` (Hennadii Stepanov)
88ec5d40dc build: Increase MS Visual Studio minimum version (Hennadii Stepanov)
555f9dd5d3 rpc, refactor: Add `decodepsbt_outputs` (Hennadii Stepanov)
0c432cbbfa rpc, refactor: Add `decodepsbt_inputs` (Hennadii Stepanov)
01d95a3964 rpc, refactor: Add `getblock_prevout` (Hennadii Stepanov)

Pull request description:

  Visual Studio 2022 with `/std:c++20` supports [designated initializers](https://github.com/bitcoin/bitcoin/pull/24531).

ACKs for top commit:
  sipsorcery:
    reACK 630c1711b4.

Tree-SHA512: 5b8933940dd69061c6b077512168bebb6fea05d429b63ffbab191950798b4c825e8484b1a651db0ae13f97eae481097d3c16395659c0f3b9f847af2aaf44b65d

src/test/util/setup_common.cpp

@@ -36,7 +36,6 @@
 #include <timedata.h>
 #include <txdb.h>
 #include <txmempool.h>
-#include <util/designator.h>
 #include <util/strencodings.h>
 #include <util/string.h>
 #include <util/thread.h>
@@ -158,10 +157,10 @@ BasicTestingSetup::~BasicTestingSetup()
 CTxMemPool::Options MemPoolOptionsForTest(const NodeContext& node)
 {
     CTxMemPool::Options mempool_opts{
-        Desig(estimator) node.fee_estimator.get(),
+        .estimator = node.fee_estimator.get(),
         // Default to always checking mempool regardless of
         // chainparams.DefaultConsistencyChecks for tests
-        Desig(check_ratio) 1,
+        .check_ratio = 1,
     };
     ApplyArgsManOptions(*node.args, mempool_opts);
     return mempool_opts;