fix: user transformations timeout

[achettyiitr]

Description

• Add support for handling panics in case of user transformations for timeouts.
• Small refactoring around removing globals.

Notion Ticket

https://www.notion.so/rudderstacks/Hosted-abort-jobs-timed-out-during-UT-c21526789be046b3bec857bd239b8ae3?pvs=4

Security

• The code changed/added as part of this pull request won't create any security issues with how the software is being used.

[codecov]

Codecov Report

Patch coverage: 85.62% and project coverage change: +0.03 🎉

Comparison is base (9e7f117) 68.08% compared to head (6cd9191) 68.12%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3583      +/-   ##
==========================================
+ Coverage   68.08%   68.12%   +0.03%     
==========================================
  Files         318      318              
  Lines       50271    50382     +111     
==========================================
+ Hits        34229    34324      +95     
- Misses      13816    13841      +25     
+ Partials     2226     2217       -9     

Impacted Files	Coverage Δ
enterprise/replay/replay.go	0.00% <0.00%> (ø)
enterprise/replay/sourceWorker.go	0.00% <0.00%> (ø)
runner/runner.go	70.51% <ø> (-0.24%)	⬇️
processor/trackingplan.go	53.38% <54.54%> (ø)
processor/transformer/transformer.go	90.25% <88.80%> (+18.39%)	⬆️
processor/eventfilter/eventfilter.go	91.66% <100.00%> (ø)
processor/integrations/integrations.go	63.51% <100.00%> (+3.71%)	⬆️
processor/manager.go	94.73% <100.00%> (+0.09%)	⬆️
processor/processor.go	87.49% <100.00%> (-0.12%)	⬇️
...ger/transformation/transformationStatusUploader.go	43.01% <100.00%> (ø)
... and 1 more

... and 25 files with indirect coverage changes

☔ View full report in Codecov by Sentry.
📢 Do you have feedback about the report comment? Let us know in this issue.

[atzoum]

LGTM, I have provided some comments which suggest to perform some further refactoring on this package