fix(misconf): perform operations on attribute safely

[nikpivkin]

Description

This PR wraps operations in a safeOp function that checks that the attribute value is non-null and known before performing the operation. This is only done for operations that really need to work with a known value rather than an expression directly.

Related issues

• Close fix(misconf): perform operations on attribute safely #8779

Checklist

• I've read the guidelines for contributing to this repository.
• I've followed the conventions in the PR title.
• I've added tests that prove my fix is effective or that my feature works.
• I've updated the documentation with the relevant information (if needed).
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• I've included a "before" and "after" example to the description (if the PR is a user interface change).