fix: Corrected the comparison between an untyped constant and an inte…

…rface (gnolang#1732)

This error is identified by gnolang#1426, here is a quick fix.
It can also be seen as the beginning of a refactoring effort on gnolang#1426 to
break it down into smaller ones.

Reproduction of this issue:
```go
package main

func foo() uint64 {
	return 100
}

func bar() interface{} {
	return foo()
}

func main() {
	println(100 == bar())

	println(100 == foo())

	println(uint64(100) == bar())

}
```
https://go.dev/play/p/ftkZeNziwdM

Co-authored-by: Miloš Živković <[email protected]>

examples/gno.land/r/demo/foo1155/foo1155_test.gno

@@ -18,8 +18,8 @@ func TestFoo721(t *testing.T) {
 		expected interface{}
 		fn       func() interface{}
 	}{
-		{"BalanceOf(admin, tid1)", 100, func() interface{} { return BalanceOf(admin, tid1) }},
-		{"BalanceOf(bob, tid1)", 0, func() interface{} { return BalanceOf(bob, tid1) }},
+		{"BalanceOf(admin, tid1)", uint64(100), func() interface{} { return BalanceOf(admin, tid1) }},
+		{"BalanceOf(bob, tid1)", uint64(0), func() interface{} { return BalanceOf(bob, tid1) }},
 		{"IsApprovedForAll(admin, bob)", false, func() interface{} { return IsApprovedForAll(admin, bob) }},
 	} {
 		t.Run(tc.name, func(t *testing.T) {

examples/gno.land/r/demo/foo721/foo721_test.gno

@@ -18,8 +18,8 @@ func TestFoo721(t *testing.T) {
 		expected interface{}
 		fn       func() interface{}
 	}{
-		{"BalanceOf(admin)", 10, func() interface{} { return BalanceOf(admin) }},
-		{"BalanceOf(hariom)", 5, func() interface{} { return BalanceOf(hariom) }},
+		{"BalanceOf(admin)", uint64(10), func() interface{} { return BalanceOf(admin) }},
+		{"BalanceOf(hariom)", uint64(5), func() interface{} { return BalanceOf(hariom) }},
 		{"OwnerOf(0)", users.Resolve(admin), func() interface{} { return OwnerOf(grc721.TokenID("0")) }},
 		{"IsApprovedForAll(admin, hariom)", false, func() interface{} { return IsApprovedForAll(admin, hariom) }},
 	} {