PR Checklist

• The commit message follows our guidelines: https://github.com/elementor/elementor/blob/master/.github/CONTRIBUTING.md

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
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Summary

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Description

An explanation of what is done in this PR

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Quality assurance

• I have tested this code to the best of my abilities
• I have added unittests to verify the code works as intended
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Fixes #

✨ PR Description

Purpose: Fix controls with missing variables by implementing proper error handling and UI components instead of throwing exceptions.
Main changes:

• Added MissingVariable UI component with alert and warning indicators for variables that no longer exist
• Replaced error throwing with graceful handling in ColorVariableControl and FontVariableControl
• Added unit tests to validate behavior with missing variables

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