fix(win32): prevent render cycle from being reentrant in some cases

[ramezgerges]

GitHub Issue: closes https://github.com/unoplatform/brain-products-private/issues/14

PR Type:

What is the current behavior? 🤔

What is the new behavior? 🚀

PR Checklist ✅

Please check if your PR fulfills the following requirements:

• [ ] 📝 Commits must be following the Conventional Commits specification.
• [ ] 🧪 Added Runtime tests, UI tests, or a manual test sample for the changes have been added (for bug fixes / features) (if applicable)
• [ ] 📚 Docs have been added/updated which fit documentation template (for bug fixes / features)
• [ ] 🖼️ Validated PR Screenshots Compare Test Run results.
• [ ] ❗ Contains NO breaking changes

Other information ℹ️

[unodevops]

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⚠️⚠️ The build 168557 has failed on Uno.UI - CI.

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[ramezgerges]

/azp run

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Azure Pipelines successfully started running 2 pipeline(s).

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⚠️⚠️ The build 169344 has failed on Uno.UI - CI.

[ramezgerges]

/azp run

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Azure Pipelines successfully started running 2 pipeline(s).

[unodevops]

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[unodevops]

⚠️⚠️ The build 169675 has failed on Uno.UI - CI.

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[unodevops]

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[agneszitte]

@Mergify backport release/stable/6.1

[mergify[bot]]

backport release/stable/6.1

✅ Backports have been created

• #21026 fix(win32): prevent render cycle from being reentrant in some cases (backport #20795) has been created for branch release/stable/6.1 but encountered conflicts