fix: Ensure ASM does not apply when the extension is not present

[astuyve]

What does this PR do?

We identified and fixed a similar issue in the serverless plugin where ASM config may inadvertently be applied to functions without the extension configured.
This would cause those functions to crash.

Motivation

Testing Guidelines

Additional Notes

Types of Changes

• Bug fix
• New feature
• Breaking change
• Misc (docs, refactoring, dependency upgrade, etc.)

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