fix: nested loop protection without braces causing ReferenceError: _LP is not defined

[dsaicharan072-cmyk]

Describe the bug

When users run sketch files with nested loops that do not use braces (e.g., for (...) for (...) stmt), the preprocessor generates loop protection checks using _LP[idx] variables. However, because the inner loop is not a direct child of any BlockStatement, the preprocessor was silently dropping the var _LP0 = Date.now() variable declaration. This resulted in ReferenceError: _LP0 is not defined when executing the code in the preview.

Solution

In jsPreprocess.js:

• Track directParent (the immediate parent loop or statement) in collectLoopsToProtect.
• In injectProtection, when parentBlock.body.indexOf(loop) === -1, check if it's nested directly under directParent without braces.
• If so, wrap the parent's body in a BlockStatement containing both the prepended variable declaration and the loop itself.
• Resolved an ESLint violation (no-continue rule) by restructuring the loops collection conditional logic.

Tests

• Added regression unit tests covering nested for loops and while loops without braces inside other loops.
• All 260 client tests passed successfully.