Fix parsing of record codecs that have attributes with castFromPg

[benjie]

Description

Fixes #1987. Essentially it wasn't safe to do record::text if any of the codecs of the attributes of the record used castFromPg because their fromPg methods would be expecting the cast version of the data, not the raw data. Solution was to check for castFromPg on each attribute and then cast the entire expression if one existed.

Performance impact

Yikes.

Security impact

Improvement?

Checklist

• My code matches the project's code style and yarn lint:fix passes.
• I've added tests for the new feature, and yarn test passes.
• I have detailed the new feature in the relevant documentation.
• I have added this feature to 'Pending' in the RELEASE_NOTES.md file (if one exists).
• If this is a breaking change I've explained why.

[changeset-bot]

🦋 Changeset detected

Latest commit: 8f525f4

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 6 packages

Name	Type
postgraphile	Patch
@dataplan/pg	Patch
graphile-utils	Patch
pgl	Patch
graphile	Patch
graphile-build-pg	Patch

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