[test] Move irJsText tests to irText directory

So that all irText tests could be found in one place

compiler/testData/ir/irText/js/dynamic/invokeOperator.kt

@@ -0,0 +1,10 @@
+// FIR_IDENTICAL
+fun invoke() {}
+
+fun test1(a: dynamic) = a(1)
+fun test2(a: dynamic) = a.invoke(1)
+fun test3(a: dynamic, b: dynamic) = a(b)
+fun test4(a: dynamic, b: dynamic) = a.invoke(b)
+fun test5(a: dynamic, b: dynamic) = a(b)(b)
+fun test6(a: dynamic, b: dynamic) = a(b).invoke(b)
+fun test7(a: dynamic) = invoke()