MM-20934: Fixing int overflow in 32 bits on MaxImageSize check (#14280)

* MM-20934: Fixing int overflow in 32 bits on MaxImageSize check

* Adding comments explaining the casting and the bug fixed there

* Apply suggestions from code review

Co-Authored-By: Juho Nurminen <juhonurm@gmail.com>

* Fixing store layers

Co-authored-by: Juho Nurminen <juhonurm@gmail.com>

model/file.go

@@ -9,7 +9,7 @@ import (
 )
 
 const (
-	MaxImageSize = 6048 * 4032 // 24 megapixels, roughly 36MB as a raw image
+	MaxImageSize = int64(6048 * 4032) // 24 megapixels, roughly 36MB as a raw image
 )
 
 var (