* feat(meta-pixel): add trackingEvent to zod schema
* fix: do not allow trackingEvent to be optional
* feat(meta-pixel): add trackingEvent selection dropdown to UI
* feat(meta-pixel): add trackingEvent to Event Type App Data
* fix(meta-pixel): implement history API hook for SPA conversion tracking
* fix(meta-pixel): check for cancel in URL and prevent Re-wrapping of pushState
* Update EventTypeAppSettingsInterface.tsx
* fix: make trackingEvent optional in zod schema to fix type-check
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Co-authored-by: Sahitya Chandra <sahityajb@gmail.com>