fix stylecheck error with asyncdispatch (#19350)

* stylecheck usages part two: stdlib cleanup

typeinfo.nim: importCompilerProc => importcompilerproc

nre.nim: newLineFlags => newlineFlags

system.nim: JSRoot => JsRoot

ref #19319

* prefer importCompilerProc

* fix stylecheck error with asyncdispatch

it is a partial regression since #12842

* add tests

* don't use echo in tests

tests/stylecheck/taccept.nim

@@ -0,0 +1,17 @@
+discard """
+  matrix: "--styleCheck:error --styleCheck:usages"
+"""
+
+import asyncdispatch
+
+type
+  Name = object
+    id: int
+
+template hello =
+  var iD = "string"
+  var name: Name
+  doAssert name.id == 0
+  doAssert iD == "string"
+
+hello()