[IR] Dump IdSignatures and mangled names in irText tests

The reason #1 for this feature is that we want to test IdSignatures
generated for declarations. Currently, there is no (easy) way to ensure
that a change in the signature building logic doesn't cause any breaking
changes wrt klibs.

Now, most IdSignatures include hashed mangled names in them, so even if
we catch a regression where the included hash changes, there would be no
way of knowing immediately what caused it, unless we'd also have mangled
names in the expectations.

The reason #2 is to test the manglers themselves. Currently, there are
no tests for them. They heavily duplicate each other, this is already
causing issues (see KT-57427) that would be very hard to catch without
these tests.

^KT-58238 Fixed

compiler/testData/ir/irText/js/dynamic/dynamicBinaryOperator.sig.kt.txt

@@ -0,0 +1,25 @@
+// CHECK JS_IR NATIVE:
+//   Mangled name: #testBinaryMinus(<dynamic>){}
+//   Public signature: /testBinaryMinus|-6906044509434142120[0]
+fun testBinaryMinus(d: dynamic): dynamic
+
+// CHECK JS_IR NATIVE:
+//   Mangled name: #testBinaryPlus(<dynamic>){}
+//   Public signature: /testBinaryPlus|-1566186978437165994[0]
+fun testBinaryPlus(d: dynamic): dynamic
+
+// CHECK JS_IR NATIVE:
+//   Mangled name: #testDiv(<dynamic>){}
+//   Public signature: /testDiv|-5313978605720972233[0]
+fun testDiv(d: dynamic): dynamic
+
+// CHECK JS_IR NATIVE:
+//   Mangled name: #testMod(<dynamic>){}
+//   Public signature: /testMod|-4500464822782079065[0]
+fun testMod(d: dynamic): dynamic
+
+// CHECK JS_IR NATIVE:
+//   Mangled name: #testMul(<dynamic>){}
+//   Public signature: /testMul|7374329083477531332[0]
+fun testMul(d: dynamic): dynamic
+