Merge bitcoin#20316: test: Fix wallet_multiwallet test issue on Windows

fa00ff0 test: Fix wallet_multiwallet test issue on Windows (MarcoFalke)

Pull request description:

  Fixes:

  ```
  Traceback (most recent call last):
    File "test\functional\test_framework\test_framework.py", line 126, in main
      self.run_test()
    File "test/functional/wallet_multiwallet.py", line 120, in run_test
      assert_equal(sorted(map(lambda w: w['name'], self.nodes[0].listwalletdir()['wallets'])), sorted(in_wallet_dir))
    File "test\functional\test_framework\util.py", line 49, in assert_equal
      raise AssertionError("not(%s)" % " == ".join(str(arg) for arg in (thing1, thing2) + args))
  AssertionError: not(['', 'sub\\w5', 'w', 'w1', 'w2', 'w3', 'w7', 'w7_symlink', 'w8'] == ['', 'sub/w5', 'w', 'w1', 'w2', 'w3', 'w7', 'w7_symlink', 'w8'])

ACKs for top commit:
  promag:
    ACK fa00ff0.

Tree-SHA512: 7a809a352677a216465cef59e866e4881272e302e897cebf7d9645bf87aebeaf54435bb0692bb5c1381c2dd680e8a34e640ea18ca6e2a4087e3233cd9c24ed04

test/functional/wallet_multiwallet.py

@@ -104,14 +104,14 @@ def wallet_file(name):
         #   w8         - to verify existing wallet file is loaded correctly. Not tested for SQLite wallets as this is a deprecated BDB behavior.
         #   ''         - to verify default wallet file is created correctly
         to_create = ['w1', 'w2', 'w3', 'w', 'sub/w5', 'w7_symlink']
-        in_wallet_dir = to_create.copy() # Wallets in the wallet dir
-        in_wallet_dir.append('w7') # w7 is not loaded or created, but will be listed by listwalletdir because w7_symlink
-        to_create.append(os.path.join(self.options.tmpdir, 'extern/w6')) # External, not in the wallet dir, so we need to avoid adding it to in_wallet_dir
+        in_wallet_dir = [w.replace('/', os.path.sep) for w in to_create]  # Wallets in the wallet dir
+        in_wallet_dir.append('w7')  # w7 is not loaded or created, but will be listed by listwalletdir because w7_symlink
+        to_create.append(os.path.join(self.options.tmpdir, 'extern/w6'))  # External, not in the wallet dir, so we need to avoid adding it to in_wallet_dir
         to_load = [self.default_wallet_name]
         if not self.options.descriptors:
             to_load.append('w8')
-        wallet_names = to_create + to_load # Wallet names loaded in the wallet
-        in_wallet_dir += to_load # The loaded wallets are also in the wallet dir
+        wallet_names = to_create + to_load  # Wallet names loaded in the wallet
+        in_wallet_dir += to_load  # The loaded wallets are also in the wallet dir
         self.start_node(0)
         for wallet_name in to_create:
             self.nodes[0].createwallet(wallet_name)
@@ -298,7 +298,6 @@ def wallet_file(name):
             # Fail to load if one wallet is a copy of another, test this twice to make sure that we don't re-introduce #14304
             assert_raises_rpc_error(-4, "BerkeleyDatabase: Can't open database w8_copy (duplicates fileid", self.nodes[0].loadwallet, 'w8_copy')
 
-
         # Fail to load if wallet file is a symlink
         assert_raises_rpc_error(-4, "Wallet file verification failed. Invalid -wallet path 'w8_symlink'", self.nodes[0].loadwallet, 'w8_symlink')
 
@@ -397,5 +396,6 @@ def wallet_file(name):
         self.nodes[0].unloadwallet(wallet)
         self.nodes[1].loadwallet(wallet)
 
+
 if __name__ == '__main__':
     MultiWalletTest().main()