fix: resolve parameterized $compareTo types and fix array count type

- VisitNameAndData: return any instead of named struct when mergeCompareTo
  resolves $compareTo, fixing field type mismatches for switch/container types
- ContainerCompareTo: traverse anon/bitfield fields for compareTo resolution,
  fixes entityMetadata 'field not found' errors
- Array.Count: change from string to any to handle numeric count values
- ArrayEncoder: fix nil check to correctly write length prefix for arrays
- ArrayDecoder: use fmt.Sprint for safe Count conversion

mc/proto_generator/native_decoder.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"fmt"
 	"go/ast"
 	"go/token"
 	"slices"
@@ -124,13 +125,14 @@ func ArrayDecoder(g *Generator, varToSet ast.Expr, dataRaw any, name string) (s
 			return
 		}
 	} else {
+		countStr := fmt.Sprint(data.Count)
 		var n int
-		n, err = strconv.Atoi(data.Count)
+		n, err = strconv.Atoi(countStr)
 		var e ast.Expr
 		if err == nil {
 			e = NumLit(n)
 		} else {
-			e, _, err = g.ParseCompareTo(data.Count)
+			e, _, err = g.ParseCompareTo(countStr)
 		}
 		s2 = append(s2, Assign121(Ident(lName), e))
 	}