Reimplementing #8890 (lib/const: Simplify + cleanup) (#8901)

* lib/const: Simplify + cleanup

* Fix nil issue

* Update const.rb

* Always convert result to boolean

* Always convert result to boolean

* Use File.join to prevent duplicate slashes

* rubocop: Disable `Lint/RedundantSafeNavigation` rule

* ruby_rubocop: Update checksum

* Fix logic

* Change `CREW_DLL_PREFIX` to `CREW_WINE_PREFIX`

* Use `&&` to concatenate commands

* Update const.rb

* Remove redundant `nil`

* Bump version

* Align + more cleanup

* Don't use ENV.fetch when default value is not needed

---------

Co-authored-by: Satadru Pramanik, DO, MPH, MEng <satadru@gmail.com>

.rubocop.yml

@@ -105,6 +105,9 @@ Lint/ShadowingOuterLocalVariable:
 Lint/SuppressedException:
   Enabled: false
 
+Lint/RedundantSafeNavigation:
+  Enabled: false
+
 Layout/LineLength:
   AllowedPatterns:
     - '#'