[FAIL] Re-enable Babbage-era minimum UTxO golden tests.

Note that these tests currently fail, so we have marked this commit with
the [FAIL] tag.

Subsequent commits will also be marked with [FAIL] until the whole test
suite passes. The first commit that causes the whole test suite to pass
will be marked with [PASS].

Test failures are of the following form:
```
  lib/shelley/test/unit/Cardano/Wallet/Shelley/MinimumUTxOSpec.hs:496:9:
  1) computeMinimumCoinForUTxO, Golden Tests, goldenTests_computeMinimumCoinForUTxO Babbage, golden test #0
       Falsified (after 1 test):
         resultExpected:
             Coin 995610

         resultReturned:
             Coin 1077500

         Condition violated: resultReturned == resultExpected

  To rerun use: --match "/computeMinimumCoinForUTxO/Golden Tests/goldenTests_computeMinimumCoinForUTxO Babbage/golden test #0/"
  ...
```

lib/shelley/test/unit/Cardano/Wallet/Shelley/MinimumUTxOSpec.hs

@@ -134,11 +134,9 @@ spec = do
             goldenTests_computeMinimumCoinForUTxO "Alonzo"
                 goldenMinimumUTxO_Alonzo
                 goldenMinimumCoins_Alonzo
-
-            -- FIXME [ADP-1978] Re-enable
-            --goldenTests_computeMinimumCoinForUTxO "Babbage"
-            --    goldenMinimumUTxO_Babbage
-            --    goldenMinimumCoins_Babbage
+            goldenTests_computeMinimumCoinForUTxO "Babbage"
+                goldenMinimumUTxO_Babbage
+                goldenMinimumCoins_Babbage
 
 -- Check that it's possible to evaluate 'computeMinimumCoinForUTxO' without
 -- any run-time error.
@@ -346,9 +344,8 @@ goldenMinimumUTxO_Alonzo =
     minimumUTxOForShelleyBasedEra ShelleyBasedEraAlonzo
         def {Alonzo._coinsPerUTxOWord = testParameter_coinsPerUTxOWord_Alonzo}
 
--- FIXME [ADP-1978] Re-enable
-_goldenMinimumUTxO_Babbage :: MinimumUTxO
-_goldenMinimumUTxO_Babbage =
+goldenMinimumUTxO_Babbage :: MinimumUTxO
+goldenMinimumUTxO_Babbage =
     minimumUTxOForShelleyBasedEra ShelleyBasedEraBabbage
         def {Babbage._coinsPerUTxOByte = testParameter_coinsPerUTxOByte_Babbage}
 
@@ -392,9 +389,8 @@ goldenMinimumCoins_Alonzo =
     , (goldenTokenMap_4, Coin 1_862_028)
     ]
 
--- FIXME [ADP-1978] Re-enable
-_goldenMinimumCoins_Babbage :: [(TokenMap, Coin)]
-_goldenMinimumCoins_Babbage =
+goldenMinimumCoins_Babbage :: [(TokenMap, Coin)]
+goldenMinimumCoins_Babbage =
     [ (goldenTokenMap_0, Coin   995_610)
     , (goldenTokenMap_1, Coin 1_150_770)
     , (goldenTokenMap_2, Coin 1_323_170)