proxy: fix bug with populating the data

[khanova]

Problem

Branch/project and coldStart were not populated to data events.

Summary of changes

Populate it. Also added logging for the coldstart info.

Checklist before requesting a review

• I have performed a self-review of my code.
• If it is a core feature, I have added thorough tests.
• Do we need to implement analytics? if so did you add the relevant metrics to the dashboard?
• If this PR requires public announcement, mark it with /release-notes label and add several sentences in this section.

Checklist before merging

• Do not forget to reformat commit message to not include the above checklist

[github-actions]

2490 tests run: 2367 passed, 0 failed, 123 skipped (full report)

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Code coverage* (full report)

• functions: 28.8% (6982 of 24246 functions)
• lines: 47.4% (42871 of 90518 lines)

* collected from Rust tests only

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_{The comment gets automatically updated with the latest test results
7c195e8 at 2024-03-05T15:21:57.195Z :recycle:}