feat: feature-flag min pool

[aeneasr]

No description provided.

[Copilot]

Pull Request Overview

This PR adds a feature flag to control the minimum connection pool functionality for PostgreSQL and CockroachDB connections. The change introduces a new AllowMinPool field to the ConnectionDetails struct that acts as a gate for enabling the pgx pool feature when the pool_min_conns parameter is present in the DSN.

• Added AllowMinPool boolean field to ConnectionDetails struct
• Updated connection logic to check the feature flag before enabling min pool functionality

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
connection_details.go	Adds AllowMinPool field to ConnectionDetails struct
connection_instrumented.go	Updates pool creation logic to check AllowMinPool flag

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