migrate some more "OptionalBool" to "Option[bool]" (#29479)

just some refactoring bits towards replacing **util.OptionalBool** with
**optional.Option[bool]**

---------

Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
(cherry picked from commit f6656181e4a07d6c415927220efa2077d509f7c6)

Conflicts:
	models/repo/repo_list_test.go
	trivial shared fixture count conflicts

modules/util/util_test.go

@@ -8,6 +8,8 @@ import (
 	"strings"
 	"testing"
 
+	"code.gitea.io/gitea/modules/optional"
+
 	"github.com/stretchr/testify/assert"
 )
 
@@ -173,17 +175,17 @@ func Test_RandomBytes(t *testing.T) {
 	assert.NotEqual(t, bytes3, bytes4)
 }
 
-func Test_OptionalBool(t *testing.T) {
-	assert.Equal(t, OptionalBoolNone, OptionalBoolParse(""))
-	assert.Equal(t, OptionalBoolNone, OptionalBoolParse("x"))
+func TestOptionalBoolParse(t *testing.T) {
+	assert.Equal(t, optional.None[bool](), OptionalBoolParse(""))
+	assert.Equal(t, optional.None[bool](), OptionalBoolParse("x"))
 
-	assert.Equal(t, OptionalBoolFalse, OptionalBoolParse("0"))
-	assert.Equal(t, OptionalBoolFalse, OptionalBoolParse("f"))
-	assert.Equal(t, OptionalBoolFalse, OptionalBoolParse("False"))
+	assert.Equal(t, optional.Some(false), OptionalBoolParse("0"))
+	assert.Equal(t, optional.Some(false), OptionalBoolParse("f"))
+	assert.Equal(t, optional.Some(false), OptionalBoolParse("False"))
 
-	assert.Equal(t, OptionalBoolTrue, OptionalBoolParse("1"))
-	assert.Equal(t, OptionalBoolTrue, OptionalBoolParse("t"))
-	assert.Equal(t, OptionalBoolTrue, OptionalBoolParse("True"))
+	assert.Equal(t, optional.Some(true), OptionalBoolParse("1"))
+	assert.Equal(t, optional.Some(true), OptionalBoolParse("t"))
+	assert.Equal(t, optional.Some(true), OptionalBoolParse("True"))
 }
 
 // Test case for any function which accepts and returns a single string.