chore: Fix Scala code warnings

[comphead]

What is the problem the feature request solves?

In #2254 the profile strict-warnings introduced
Build the project with strict-warnings profile enabled and need to fix scala code hygiene issues

make release PROFILES="-Pspark-3.5 -Pstrict-warnings"

Describe the potential solution

No response

Additional context

No response

[akupchinskiy]

I can work on that

[andy-hf-kwok]

@comphead
My original thought was to work on this module by module and eventually make the whole codebase comply with standard, however by working on #2558 I reckon that may be too much for PR to cater all hygiene issues at once.

Hence instead I reckon that would be better to tackle one warning at a time for the whole codebase, to make the PR be more focused. Ex: one PR to fix all -Ywarn-numeric-widen issue, so on and so forth.
WDYT?