ci: track linter warnings in MacOS/Ubuntu runners

[IshikaKhandelwal]

We're observing specific linter warnings during GitHub Actions on MacOS/Ubuntu runners that do not occur locally or on Windows runners. These warnings include:

[object_usage_linter] no visible global function definition for '%>%'.
[object_usage_linter] no visible binding for global variable 'values'.

Steps Taken:

Used `usethis::use_import_from()` for explicit imports.
Added global variable definitions using `utils::globalVariables().`
Verified local linter functionality by introducing intentional issues and observing results.

Locally, after applying the above fixes, no warnings are reported using lintr::lint_package()/ lintr::lint_dir(). However, these warnings persist in CI. These warnings don’t seem to affect functionality, but tracking them ensures they are revisited if necessary.