proc: fix hang caused by g.atomicstatus has change to atomic.Uint32 (#3129)

Co-authored-by: weixiecui <weixiecui@futunn.com>

_scripts/rtype-out.txt

@@ -27,7 +27,7 @@ type g struct {
 	waitsince int64
 	waitreason waitReason (optional)
 	stack stack
-	atomicstatus uint32
+	atomicstatus anytype
 }
 
 type gobuf struct {

pkg/proc/variables.go

@@ -918,7 +918,21 @@ func (v *Variable) parseG() (*G, error) {
 		}
 	}
 
-	status := loadInt64Maybe("atomicstatus") // +rtype uint32
+	status := uint64(0)
+	if atomicStatus := v.loadFieldNamed("atomicstatus"); atomicStatus != nil {
+		if constant.Val(atomicStatus.Value) != nil {
+			status, _ = constant.Uint64Val(atomicStatus.Value)
+		} else {
+			vv := atomicStatus.fieldVariable("value")
+			if vv == nil {
+				unreadable = true
+			} else {
+				status, _ = constant.Uint64Val(vv.Value)
+			}
+		}
+	} else {
+		unreadable = true
+	}
 
 	if unreadable {
 		return nil, ErrUnreadableG