[K/JS] Rework symbol hash calculation to make IC works with @JsExport and @JsName changes

js/js.translator/testData/incremental/invalidation/jsName/lib1/lib.0.kt

@@ -0,0 +1,8 @@
+interface Foo {
+    fun foo(): String
+    fun default(): String = "Default"
+}
+
+open class Bar {
+    open fun bar(): String = "Bar"
+}

js/js.translator/testData/incremental/invalidation/jsName/lib1/lib.2.kt

@@ -0,0 +1,9 @@
+interface Foo {
+    @JsName("_foo_")
+    fun foo(): String
+    fun default(): String = "Default"
+}
+
+open class Bar {
+    open fun bar(): String = "Bar"
+}

js/js.translator/testData/incremental/invalidation/jsName/lib1/lib.3.kt

@@ -0,0 +1,10 @@
+interface Foo {
+    @JsName("_foo_")
+    fun foo(): String
+    @JsName("_default_")
+    fun default(): String = "Default"
+}
+
+open class Bar {
+    open fun bar(): String = "Bar"
+}

js/js.translator/testData/incremental/invalidation/jsName/lib1/lib.4.kt

@@ -0,0 +1,11 @@
+interface Foo {
+    @JsName("_foo_")
+    fun foo(): String
+    @JsName("_default_")
+    fun default(): String = "Default"
+}
+
+open class Bar {
+    @JsName("_bar_")
+    open fun bar(): String = "Bar"
+}

js/js.translator/testData/incremental/invalidation/jsName/lib1/module.info

@@ -0,0 +1,18 @@
+STEP 0:
+    modifications:
+        U : lib.0.kt -> lib.kt
+    added file: lib.kt
+STEP 1:
+STEP 2:
+    modifications:
+        U : lib.2.kt -> lib.kt
+    modified ir: lib.kt
+STEP 3:
+    modifications:
+        U : lib.3.kt -> lib.kt
+    modified ir: lib.kt
+STEP 4:
+    modifications:
+        U : lib.4.kt -> lib.kt
+    modified ir: lib.kt
+STEP 5: