Add tests on different types of chain source

idea/testData/debugger/sequence/exec/collection/outs/stringAsSource.out

@@ -0,0 +1,17 @@
+LineBreakpoint created at StringAsSource.kt:5
+Run Java
+Connected to the target VM
+StringAsSource.kt:5
+"Hello World!"
+.count({ it.isUpperCase() })
+count
+    before: 12
+    after: nothing
+mappings for count
+  direct:
+    12 -> nothing
+  reverse:
+    empty
+Disconnected from the target VM
+
+Process finished with exit code 0