Fix module re-importing when inlining functions in JS BE

When inliner reads function's body from other module, it performs
substitution _ -> moduleAlias. However, local alias can't be used
for this purpose, since call site can be in public inline function
itself, so the correct substitution would be -> _.$$imports$$.alias

js/js.inliner/src/org/jetbrains/kotlin/js/inline/FunctionReader.kt

@@ -194,7 +194,7 @@ class FunctionReader(
 
         val position = info.offsetToSourceMapping[offset]
         val function = parseFunction(source, info.filePath, position, offset, ThrowExceptionOnErrorReporter, JsRootScope(JsProgram()))
-        val moduleReference = moduleNameMap[tag] ?: currentModuleName.makeRef()
+        val moduleReference = moduleNameMap[tag]?.deepCopy() ?: currentModuleName.makeRef()
 
         val sourceMap = info.sourceMap
         if (sourceMap != null) {