Actually workaround the issues from AndroidX SQLite 2.6.1

[eygraber]

• https://issuetracker.google.com/issues/447613208

[Copilot]

Pull Request Overview

This PR addresses issues introduced in AndroidX SQLite 2.6.1 by modifying the order of PRAGMA statements and replacing custom writePragma functions with the standard execSQL method.

• Replaces custom writePragma function with standard execSQL calls
• Reorders PRAGMA statements to ensure foreign_keys comes after journal_mode
• Adds comprehensive tests to verify foreign key behavior during database creation and migration

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
ConnectionPool.kt	Replaces writePragma with execSQL and reorders PRAGMA statements to work around AndroidX SQLite 2.6.1 issues
AndroidxSqliteDriver.kt	Simplifies foreign key handling during migrations by removing nested transactions and moving user_version updates
AndroidxSqliteMigrationTest.kt	Adds tests to verify foreign keys are properly disabled during migration and re-enabled afterward
AndroidxSqliteCreationTest.kt	Adds tests to verify foreign keys are properly disabled during creation and re-enabled afterward

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