[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/codegen/box/properties/lazyInitialization.kt

@@ -1,18 +0,0 @@
-// IGNORE_BACKEND: JS, NATIVE
-// DONT_TARGET_EXACT_BACKEND: WASM
-// PROPERTY_LAZY_INITIALISATION
-
-// FILE: A.kt
-
-val o = "O"
-
-// FILE: B.kt
-val ok = o + k
-
-// FILE: C.kt
-
-val k = "K"
-
-// FILE: main.kt
-
-fun box(): String = ok

compiler/testData/codegen/box/properties/lazyInitializationPure.kt

@@ -1,32 +0,0 @@
-// TARGET_BACKEND: JS_IR
-// PROPERTY_LAZY_INITIALISATION
-
-// FILE: A.kt
-
-val a = "A"
-
-// FILE: B.kt
-val b = "B".apply {}
-
-val c = b
-
-// FILE: C.kt
-val d = "D".apply {}
-
-val e = d
-
-// FILE: main.kt
-
-fun box(): String {
-    d
-    e
-    return if (
-        js("a") === "A" &&
-        js("typeof b") == "undefined" &&
-        js("typeof c") == "undefined" &&
-        js("d") === "D" &&
-        js("e") === "D"
-    )
-        "OK"
-    else "a = ${js("a")}; typeof b = ${js("typeof b")}; typeof c = ${js("typeof c")}; d = ${js("d")}; e = ${js("e")}"
-}