pprof: Exports labels as part of the Pprof reports

[manojVivek]

Pprof.me share before the fix: https://pprof.me/ac6fd766d88edfb360a963ce1be32bc0/
Pprof.me share after the fix: https://pprof.me/9cafbe58f46c0bd66677d81bf949bd30/

[alwaysmeticulous]

✅ Meticulous spotted 0 visual differences across 339 screens tested: view results.

Meticulous evaluated ~5 hours of user flows against your PR.

_{Expected differences? Click here. Last updated for commit 730bd5a. This comment will update as new commits are pushed.}