[APP-1843][1845] fix issue with draft page url, prevent error for gradient

[DinetsV]

✨ PR Description

Purpose: Fix URL handling for draft pages and add support for gradient elements in color contrast accessibility tool.
Main changes:

• Modified draft URL handling to correctly check post status instead of queried object
• Added conditional UI for gradient elements with appropriate guidance text when color inputs are unavailable
• Extended analytics tracking to distinguish between regular and gradient color contrast scenarios

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[gitstream-cm]

✨ PR Review

The PR adds gradient support with conditional UI rendering, but introduces potential runtime errors due to missing array bounds validation and null checks.

3 issues detected:

🐞 Bug - Accessing array indices without bounds validation can lead to undefined values and runtime errors.

Details: The code accesses messageArgs array indices without validating that the array contains enough elements. This could cause undefined behavior when messageArgs has fewer than 5 elements.
File: modules/scanner/assets/js/components/color-contrast-form/index.js (41-41)

🐞 Bug - Calling functions with potentially null/undefined parameters can cause runtime errors.

Details: The isLargeText function is called with item.node without null checking, which could cause errors if the node is null or undefined.
File: modules/scanner/assets/js/components/color-contrast-form/index.js (43-43)

🐞 Bug - Array access without bounds checking can result in undefined values being used in conditional logic.

Details: The scenario determination logic accesses messageArgs array indices without bounds checking, which could lead to inconsistent behavior when the array is shorter than expected.
File: modules/scanner/assets/js/layouts/color-contrast-layout.js (34-37)

Generated by LinearB AI and added by gitStream.
_{AI-generated content may contain inaccuracies. Please verify before using. We'd love your feedback! 🚀}