Merge #20202: wallet: Make BDB support optional

d52f502b1e Fix mock SQLiteDatabases (Andrew Chow)
99309ab3e9 Allow disabling BDB in configure with --without-bdb (Andrew Chow)
ee47f11f73 GUI: Force descriptor wallets when BDB is not compiled (Andrew Chow)
71e40b33bd RPC: Require descriptors=True for createwallet when BDB is not compiled (Andrew Chow)
6ebc41bf9c Enforce salvage is only for BDB wallets (Andrew Chow)
a58b719cf7 Do not compile BDB things when USE_BDB is defined (Andrew Chow)
b33af48210 Include wallet/bdb.h where it is actually being used (Andrew Chow)

Pull request description:

  Adds a `--without-bdb` option to `configure` which disables the compilation of the BDB stuff. Legacy wallets will not be created when BDB is not compiled. A legacy-sqlite wallet can be loaded, but we will not create them.

  Based on #20156 to resolve the situation where both `--without-sqlite` and `--without-bdb` are provided. In that case, the wallet is disabled and `--disable-wallet` is effectively set.

ACKs for top commit:
  laanwj:
    Code review ACK d52f502b1e

Tree-SHA512: 5a92ba7a542acc2e27003e9d4e5940e0d02d5c1f110db06cdcab831372bfd83e8d89c269caff31dd5bff062c1cf5f04683becff12bd23a33be731676f346553d

src/Makefile.test.include

@@ -292,7 +292,6 @@ BITCOIN_TESTS =\
 
 if ENABLE_WALLET
 BITCOIN_TESTS += \
-  wallet/test/db_tests.cpp \
   wallet/test/psbt_wallet_tests.cpp \
   wallet/test/wallet_tests.cpp \
   wallet/test/walletdb_tests.cpp \
@@ -302,6 +301,10 @@ BITCOIN_TESTS += \
   wallet/test/ismine_tests.cpp \
   wallet/test/scriptpubkeyman_tests.cpp
 
+if USE_BDB
+BITCOIN_TESTS += wallet/test/db_tests.cpp
+endif
+
 BITCOIN_TEST_SUITE += \
   wallet/test/wallet_test_fixture.cpp \
   wallet/test/wallet_test_fixture.h \