Templating: Prevent editing of templates and partial views in production runtime mode (closes #21564)#21600

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AndyButland wants to merge 10 commits intomainfrom

v17/21564-improvement/prevent-template-editing-in-production-mode

Commits on Feb 2, 2026

Prevent save of partial view file when using runtime production mode, and verify for partial views and templates with integration tests.
AndyButland
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Display warning when templates and partial views are not editable in the backoffice.
AndyButland
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Share styles.
AndyButland
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Validate at the partial view API whether updates are allowed based on production runtime mode.
AndyButland
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Add similar checks for templates, handling case where metadata updates are allowed.
AndyButland
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Add integration tests for verifying behaviour in production mode.
AndyButland
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Fix the breaking changes on the constructor of the service classes.
AndyButland
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Use IOptions (we don't need live updates for this setting).
AndyButland
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Addressed code review feedback.
AndyButland
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Add IsProductionMode private property on both updated services.
AndyButland
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