Fix: Update WSO2_MB_STORE_DB H2 usage recommendation [4.6.0]

[wso2-engineering-bot]

This PR was automatically generated by Claude AI.

• Issue: WSO2_MB_STORE usage recommendation regarding H2 limitation #10493
• Type: Documentation / Suggestions
• Summary: Updated documentation to warn against using H2 database for WSO2_MB_STORE_DB in production environments due to a known bug that causes frequent database crashes. Changed recommendation from using H2 to using an external database, with a reference to the H2 database issue.

Changes made:

• Updated 5 database configuration files (Oracle, Oracle RAC, PostgreSQL, MSSQL, MySQL)
• Changed note type from !!! note to !!! warning to emphasize the importance
• Replaced recommendation to use H2 with warning about H2 limitations and recommendation to use external database
• Added reference link to H2 database issue (4.0.0 doc) Updating the Security Guidelines documentation #4052

Files modified:

• en/docs/install-and-setup/setup/setting-up-databases/changing-default-databases/changing-to-oracle-rac.md
• en/docs/install-and-setup/setup/setting-up-databases/changing-default-databases/changing-to-oracle.md
• en/docs/install-and-setup/setup/setting-up-databases/changing-default-databases/changing-to-postgresql.md
• en/docs/install-and-setup/setup/setting-up-databases/changing-default-databases/changing-to-mssql.md
• en/docs/install-and-setup/setup/setting-up-databases/changing-default-databases/changing-to-mysql.md

🤖 Generated with Claude Code

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fixing-issue-10493-4.6.0-1766517306

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