Fix support for nested options.customOptionsPath

[NevilleS]

Fixes #PROD-1243

Description Of Changes

When testing PROD-1243 (from #4462) I found that I could cause Fides.init(...) to crash by supplying a nested options.customOptionsPath that didn't exist, e.g.

Fides.init({
  options: {
    customOptionsPath: "window.nonexistent_object.nested.path",
  },
  ...
})

This throws an error like:

(uncaught exception)TypeError: Cannot read properties of undefined (reading 'nested')

Code Changes

• Added failing Cypress tests to consent-banner-tcf.cy.ts
• Added failing unit tests to consent-utils.test.ts
• Fix getWindowObjFromPath to be defensive when descending nested paths

Steps to Confirm

• Run Cypress tests & unit tests 👍

Pre-Merge Checklist

• All CI Pipelines Succeeded
• Documentation:
  • documentation complete, PR opened in fidesdocs
  • documentation issue created in fidesdocs
• Issue Requirements are Met
• Relevant Follow-Up Issues Created
• Update CHANGELOG.md
• For API changes, the Postman collection has been updated

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
fides-plus-nightly	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Dec 7, 2023 2:19pm

[cypress]

Passing run #5543 ↗︎

0	4	0	0	0
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Details:

Merge 7c1b2c5 into cbf2ecc...
Project: fides	Commit: 02406d44ea ℹ️
Status: Passed	Duration: 00:32 💡
Started: Dec 7, 2023 2:30 PM	Ended: Dec 7, 2023 2:31 PM

Review all test suite changes for PR #4491 ↗︎