IR Scripting: update capturing logic for the REPL, imported scripts,

as well as all other implicit receivers.

libraries/tools/kotlin-main-kts-test/testData/import-with-capture-test.main.kts

@@ -0,0 +1,16 @@
+
+@file:Import("import-common.main.kts")
+@file:Import("import-middle.main.kts")
+
+sharedVar = sharedVar + 1
+
+class CapturingClass1 {
+    val value = sharedVar
+}
+
+class CapturingClass2 {
+    fun f() = CapturingClass1().value
+}
+
+println("${SharedObject.greeting} ${from.msg} main")
+println("sharedVar == ${CapturingClass2().f()}")