fix: Install events records for new users Edge case

[Mansi-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

• Investigated an issue where fewer "first install" events were being reported. I tried to reproduce the problem using two different samples in the same mParticle workspace but could not replicate it. However, I suspect it could be a race condition, where two threads in the app might be causing the issue. To fix this, I added synchronization to the method to prevent threading problems.

Testing Plan

• Was this tested locally? If not, explain why.
• Tested with sample app and executed test cases

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

• Closes https://go.mparticle.com/work/SQDSDKS-6988