fix: remove setting of finalizeBlockState in FinalizeBlock + fix initialHeight + add ProcessProposal in tests/sims (#16794)

Co-authored-by: Aleksandr Bezobchuk <alexanderbez@users.noreply.github.com>

server/mock/app_test.go

@@ -60,7 +60,7 @@ func TestInitApp(t *testing.T) {
 	require.Equal(t, []byte("bar"), qres.Value)
 }
 
-func TestDeliverTx(t *testing.T) {
+func TestFinalizeBlock(t *testing.T) {
 	app := SetupApp(t)
 
 	key := "my-special-key"
@@ -72,6 +72,13 @@ func TestDeliverTx(t *testing.T) {
 	tx := NewTx(key, value, randomAccounts[0].Address)
 	txBytes := tx.GetSignBytes()
 
+	_, err := app.ProcessProposal(&abci.RequestProcessProposal{
+		Hash:   []byte("apphash"),
+		Height: 1,
+		Txs:    [][]byte{txBytes},
+	})
+	require.NoError(t, err)
+
 	res, err := app.FinalizeBlock(&abci.RequestFinalizeBlock{
 		Hash:   []byte("apphash"),
 		Height: 1,