remove shallow usages for ORC (#20109)

compiler/ccgtypes.nim

@@ -84,6 +84,7 @@ proc mangleLocalName(p: BProc; s: PSym): Rope =
   result = s.loc.r
   if result == nil:
     var key = s.name.s.mangle
+    when not defined(nimSeqsV2):
       shallow(key)
     let counter = p.sigConflicts.getOrDefault(key)
     result = key.rope
@@ -102,6 +103,7 @@ proc scopeMangledParam(p: BProc; param: PSym) =
   ## generate unique identifiers reliably (consider that ``var a = a`` is
   ## even an idiom in Nim).
   var key = param.name.s.mangle
+  when not defined(nimSeqsV2):
     shallow(key)
   p.sigConflicts.inc(key)
 

compiler/msgs.nim

@@ -101,6 +101,7 @@ proc fileInfoIdx*(conf: ConfigRef; filename: AbsoluteFile; isKnownFile: var bool
 
   try:
     canon = canonicalizePath(conf, filename)
+    when not defined(nimSeqsV2):
       shallow(canon.string)
   except OSError:
     canon = filename

lib/pure/asyncnet.nim

@@ -399,6 +399,7 @@ proc recv*(socket: AsyncSocket, size: int,
   ## to be read then the future will complete with a value of `""`.
   if socket.isBuffered:
     result = newString(size)
+    when not defined(nimSeqsV2):
       shallow(result)
     let originalBufPos = socket.currPos