fix: Parse JSON metadata better and stop crash from API V1

[alishaz-polymath]

What does this PR do?

Currently, our V1 API fails because of JSON schema validation we have with zod for V1 because it doesn't have the ability to parse nested array, objects or null values.

We add parsing for these and that sorts out the bug.
This bug also causes the 3rd party apps using V1 to fail as well, such as Raycast.

Mandatory Tasks (DO NOT REMOVE)

• N/A - I have self-reviewed the code (A decent size PR without self-review might be rejected).
• N/A - I have updated the developer docs in /docs if this PR makes changes that would require a documentation change. If N/A, write N/A here and check the checkbox.
• N/A - I confirm automated tests are in place that prove my fix is effective or that my feature works.

How should this be tested?

Before:

• Add giphy app to one of your event types
• Enable it
• Disable it
• Run API V1 for event-types and see the error:

{"message":"invalid_type in 'metadata': Expected string, received object; invalid_type in 'metadata': Expected number, received object; invalid_type in 'metadata': Expected boolean, received object; invalid_type in 'metadata': Expected array, received object; invalid_type in 'metadata,apps': Expected string, received object; invalid_type in 'metadata,apps': Expected number, received object; invalid_type in 'metadata,apps': Expected boolean, received object; invalid_type in 'metadata,apps': Expected array, received object; invalid_type in 'metadata,apps,giphy': Expected string, received object; invalid_type in 'metadata,apps,giphy': Expected number, received object; invalid_type in 'metadata,apps,giphy': Expected boolean, received object; invalid_type in 'metadata,apps,giphy': Expected array, received object; invalid_type in 'metadata,apps,giphy,price': Expected string, received null; invalid_type in 'metadata,apps,giphy,price': Expected number, received null; invalid_type in 'metadata,apps,giphy,price': Expected boolean, received null; invalid_type in 'metadata,apps,giphy,price': Expected array, received null; invalid_type in 'metadata,apps,giphy,price': Expected object, received null; invalid_type in 'metadata,apps,giphy,TRACKING_ID': Expected string, received null; invalid_type in 'metadata,apps,giphy,TRACKING_ID': Expected number, received null; invalid_type in 'metadata,apps,giphy,TRACKING_ID': Expected boolean, received null; invalid_type in 'metadata,apps,giphy,TRACKING_ID': Expected array, received null; invalid_type in 'metadata,apps,giphy,TRACKING_ID': Expected object, received null"}

After:

• Run API V1 for event-types again, and the error is gone, parsing works!

Checklist

• I haven't read the contributing guide
• My code doesn't follow the style guidelines of this project
• I haven't commented my code, particularly in hard-to-understand areas
• I haven't checked if my changes generate no new warnings

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[graphite-app]

Graphite Automations

"Add ready-for-e2e label" took an action on this PR • (01/20/25)

1 label was added to this PR based on Keith Williams's automation.

[github-actions]

E2E results are ready!

• Workflow #44530.1 latest results