Quote database names in PostgreSQL and SQL Server adapters

[dereuromark]

Summary

• MySQL adapter properly quotes database names in createDatabase() and dropDatabase() using quoteTableName(), but PostgreSQL and SQL Server did not quote these identifiers consistently.

PostgreSQL fixes:

• createDatabase(): Use quoteSchemaName() for database name and quoteString() for charset encoding
• dropDatabase(): Use quoteSchemaName() for database name

SQL Server fixes:

• createDatabase(): Use quoteSchemaName() for database name and collation instead of manual [brackets]
• dropDatabase(): Replace heredoc with sprintf using quoteSchemaName() for identifiers and quoteString() for string comparisons

Docblock fixes:

• Fix @params typo to @param in BaseMigration.php foreignKey() and index() methods
• Fix copy-paste docblock errors in 7 test seed files where "NumbersSeed seed" was incorrectly used

This ensures consistent identifier quoting across all database adapters and fixes documentation errors.

Test plan

• PHPStan passes
• PHPCS passes
• Existing tests pass