fixes #25120; don't generate hooks for NimNode (#25144)

fixes #25120

compiler/semtypes.nim

@@ -1147,7 +1147,9 @@ proc semAnyRef(c: PContext; n: PNode; kind: TTypeKind; prev: PType): PType =
       let t = newTypeS(tySink, c, result)
       result = t
     else: discard
-    if result.kind == tyRef and c.config.selectedGC in {gcArc, gcOrc, gcAtomicArc}:
+    if result.kind == tyRef and 
+        c.config.selectedGC in {gcArc, gcOrc, gcAtomicArc} and
+        tfTriggersCompileTime notin result.flags:
       result.flags.incl tfHasAsgn
 
 proc findEnforcedStaticType(t: PType): PType =

tests/errmsgs/t25120.nim

@@ -0,0 +1,6 @@
+discard """
+  errormsg: "request to generate code for .compileTime proc: riesig"
+"""
+
+proc riesig(): NimNode = discard
+discard riesig()