Add UNIQUE INDEXes to replace previous primary keys

This was causing duplicate rows to get inserted during a replay
instead of it being an UPDATE

core/store/migrate/migrations/0248_log_poller_primary_keys.sql

@@ -2,12 +2,20 @@
 
 ALTER TABLE evm.logs DROP CONSTRAINT logs_pkey;
 ALTER TABLE evm.logs ADD COLUMN id BIGINT PRIMARY KEY GENERATED ALWAYS AS IDENTITY;
+CREATE UNIQUE INDEX idx_evm_logs_block_hash_log_index_evm_chain_id ON evm.logs (block_hash, log_index, evm_chain_id);
 ALTER TABLE evm.log_poller_blocks  DROP CONSTRAINT log_poller_blocks_pkey;
 ALTER TABLE evm.log_poller_blocks ADD COLUMN id BIGINT PRIMARY KEY GENERATED ALWAYS AS IDENTITY;
+CREATE UNIQUE INDEX idx_evm_log_poller_blocks_block_number_evm_chain_id ON evm.log_poller_blocks (block_number, evm_chain_id);
+
+-- TODO: restore UNIQUE constratint on original pkey!
 
 -- +goose Down
 
+DROP INDEX IF EXISTS evm.idx_evm_log_poller_blocks_block_number_evm_chain_id;
 ALTER TABLE evm.log_poller_blocks DROP COLUMN id;
 ALTER TABLE evm.log_poller_blocks ADD PRIMARY KEY (block_number, evm_chain_id);
+DROP INDEX IF EXISTS evm.idx_evm_logs_block_hash_log_index_evm_chain_id;
 ALTER TABLE evm.logs DROP COLUMN id;
 ALTER TABLE evm.logs ADD PRIMARY KEY (block_hash, log_index, evm_chain_id);
+
+