fix: Prevent event name prefix from being sent to Reporting Service

[alexs-mparticle]

Instructions

1. PR target branch should be against development
2. PR title name should follow this format: https://github.com/mParticle/mparticle-workflows/blob/main/.github/workflows/pr-title-check.yml
3. PR branch prefix should follow this format: https://github.com/mParticle/mparticle-workflows/blob/main/.github/workflows/pr-branch-check-name.yml

Summary

• At the time this kit was created, Mixpanel logged Page Views as standard events via their track method. As a workaround, we added a prefix of "Viewed" when sending these events to Mixpanel to allow customers to easily identify events as Page Views.
• However, this prefix for event names does not allow event names to be properly tracked within the mParticle UI.
• As a fix, we are only appending the prefix of "Viewed" when sending events to Mixpanel, but retaining the initial event name within mParticle.
• Note: Mixpanel now supports tracking pageviews. This feature will be implemented in a future revision of this kit.

Testing Plan

• Was this tested locally? If not, explain why.
• Using a sample app, log a page view event.
• The event should appear in Mixpanel with a prefix of "Viewed", and the Event Forwarder Counts should increment.
• However the event reporting payload should not contain the "Viewed" prefix.

Reference Issue (For mParticle employees only. Ignore if you are an outside contributor)

• Closes https://go.mparticle.com/work/SQDSDKS-5868