Fix some user name usages (#33689)

1. GetUserOrgsList should "order by" lower_name
2. GetIssuePostersWithSearch should search in-case-sensitive-ly
3. LoginName should not be used as username

By the way, remove unnecessary "onGiteaRun"

models/organization/org_list.go

@@ -124,6 +124,7 @@ func GetUserOrgsList(ctx context.Context, user *user_model.User) ([]*MinimalOrg,
 	if err := db.GetEngine(ctx).Select(columnsStr).
 		Table("user").
 		Where(builder.In("`user`.`id`", queryUserOrgIDs(user.ID, true))).
+		OrderBy("`user`.lower_name ASC").
 		Find(&orgs); err != nil {
 		return nil, err
 	}

models/repo/user_repo.go

@@ -5,6 +5,7 @@ package repo
 
 import (
 	"context"
+	"strings"
 
 	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/models/perm"
@@ -149,9 +150,9 @@ func GetRepoAssignees(ctx context.Context, repo *Repository) (_ []*user_model.Us
 // If isShowFullName is set to true, also include full name prefix search
 func GetIssuePostersWithSearch(ctx context.Context, repo *Repository, isPull bool, search string, isShowFullName bool) ([]*user_model.User, error) {
 	users := make([]*user_model.User, 0, 30)
-	var prefixCond builder.Cond = builder.Like{"name", search + "%"}
+	var prefixCond builder.Cond = builder.Like{"lower_name", strings.ToLower(search) + "%"}
 	if isShowFullName {
-		prefixCond = prefixCond.Or(builder.Like{"full_name", "%" + search + "%"})
+		prefixCond = prefixCond.Or(db.BuildCaseInsensitiveLike("full_name", "%"+search+"%"))
 	}
 
 	cond := builder.In("`user`.id",

models/repo/user_repo_test.go

@@ -12,6 +12,7 @@ import (
 	user_model "code.gitea.io/gitea/models/user"
 
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func TestRepoAssignees(t *testing.T) {
@@ -38,3 +39,19 @@ func TestRepoAssignees(t *testing.T) {
 		assert.NotContains(t, []int64{users[0].ID, users[1].ID, users[2].ID}, 15)
 	}
 }
+
+func TestGetIssuePostersWithSearch(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+
+	repo2 := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 2})
+
+	users, err := repo_model.GetIssuePostersWithSearch(db.DefaultContext, repo2, false, "USER", false /* full name */)
+	require.NoError(t, err)
+	require.Len(t, users, 1)
+	assert.Equal(t, "user2", users[0].Name)
+
+	users, err = repo_model.GetIssuePostersWithSearch(db.DefaultContext, repo2, false, "TW%O", true /* full name */)
+	require.NoError(t, err)
+	require.Len(t, users, 1)
+	assert.Equal(t, "user2", users[0].Name)
+}