test: cover read-only blockstore

Co-authored-by: Andrew Chow <github@achow101.com>

test/functional/test_runner.py

@@ -162,6 +162,7 @@ BASE_SCRIPTS = [
     'wallet_abandonconflict.py --legacy-wallet',
     'wallet_abandonconflict.py --descriptors',
     'feature_reindex.py',
+    'feature_reindex_readonly.py',
     'wallet_labels.py --legacy-wallet',
     'wallet_labels.py --descriptors',
     'p2p_compactblocks.py',