[JS IR] - Remove file lowering declarations from lowering phases

- rename fileToPurenessInitializers onto fileToInitializerPureness
- remove redundant check on top-level property

[JS IR] Rename initialis* to initializ* for consistency

[JS IR] Move propertyLazyInitialization property to context from configuration

[JS IR] Add test on lazy initialization properties order

[JS IR] Add multi module for lazy initialization of properties

[JS IR] Move tests onto js.translator

[JS IR] Rename fileToInitializerPureness according to context name

^KT-43222 fixed

compiler/testData/cli/js/jsExtraHelp.out

@@ -18,8 +18,8 @@ where advanced options include:
   -Xir-produce-klib-dir      Generate unpacked KLIB into parent directory of output JS file.
                              In combination with -meta-info generates both IR and pre-IR versions of library.
   -Xir-produce-klib-file     Generate packed klib into file specified by -output. Disables pre-IR backend
-  -Xir-property-lazy-initialisation
-                             Perform lazy initialisation for properties
+  -Xir-property-lazy-initialization
+                             Perform lazy initialization for properties
   -Xmetadata-only            Generate *.meta.js and *.kjsm files only
   -Xtyped-arrays             Translate primitive arrays to JS typed arrays
   -Xwasm                     Use experimental WebAssembly compiler backend