pindexer: repair SQL syntax for create type/create domain

[aubrika]

Fixes some SQL statements in the prior commit which were not valid postgres.

• If this code contains consensus-breaking changes, I have added the "consensus-breaking" label. Otherwise, I declare my belief that there are not consensus-breaking changes, for the following reason:

  Only indexer changes.

[aubrika]

If the NOT NULL constraint intended here previously is critical, this could be refactored with something like CREATE DOMAIN Asset AS BYTEA NOT NULL; but that might cause translation issues & require a bit more work that this

[conorsch]

This helps, but I'm still seeing errors when I attempt to spin up locally. Running this command should pass, for us to merge this PR:

❯ sqlfluff parse --dialect postgres crates/bin/pindexer/src/dex/dex.sql
[...snip...]
==== parsing violations ====
L:  34 | P:   1 |  PRS | Line 34, Position 1: Found unparsable section: 'CREATE TABLE IF
                       | NOT EXISTS trace_step (\n...'
WARNING: Parsing errors found and dialect is set to 'postgres'. Have you configured your dialect correctly?
❯ echo $?
1

[conorsch]

Much better! The sqlfluff parse <file> command passes now, but I'm still seeing errors on pindexer startup. This time it's:

Error: error returned from database: cannot insert multiple commands into a prepared statement

To test, I'm using the STR in #4759.

[conorsch]

That did it! 💪

[conorsch]

Drat, I spoke too soon:

Error: error returned from database: duplicate key value violates unique constraint "block_details_pkey"                                                                                   ```

further local testing showed problems

[cronokirby]

That seems to point to a weirder thing in cometindex because that should only happen if you ingest two block root events with the same height

[cronokirby]

#4762 fixes a bug in cometindex which leads to this

[conorsch]

#4762 fixes a bug in cometindex which leads to this

Yup, testing locally with that fix cherry-picked in resolves, thanks. 👍