Fix network error when open/close organization/individual projects and redirect to project page (#30387)

Follow #27734


![image](https://github.com/go-gitea/gitea/assets/18380374/02ed6b9a-cbb6-4f49-a54a-ca76a0d052a9)

Updated:
Redirect to project page instead of project list page.

routers/web/org/projects.go

@@ -7,7 +7,6 @@ import (
 	"errors"
 	"fmt"
 	"net/http"
-	"net/url"
 	"strconv"
 	"strings"
 
@@ -195,14 +194,15 @@ func NewProjectPost(ctx *context.Context) {
 
 // ChangeProjectStatus updates the status of a project between "open" and "close"
 func ChangeProjectStatus(ctx *context.Context) {
-	toClose := false
+	var toClose bool
 	switch ctx.Params(":action") {
 	case "open":
 		toClose = false
 	case "close":
 		toClose = true
 	default:
-		ctx.Redirect(ctx.ContextUser.HomeLink() + "/-/projects")
+		ctx.JSONRedirect(ctx.ContextUser.HomeLink() + "/-/projects")
+		return
 	}
 	id := ctx.ParamsInt64(":id")
 
@@ -210,7 +210,7 @@ func ChangeProjectStatus(ctx *context.Context) {
 		ctx.NotFoundOrServerError("ChangeProjectStatusByRepoIDAndID", project_model.IsErrProjectNotExist, err)
 		return
 	}
-	ctx.Redirect(ctx.ContextUser.HomeLink() + "/-/projects?state=" + url.QueryEscape(ctx.Params(":action")))
+	ctx.JSONRedirect(fmt.Sprintf("%s/-/projects/%d", ctx.ContextUser.HomeLink(), id))
 }
 
 // DeleteProject delete a project

routers/web/repo/projects.go

@@ -7,7 +7,6 @@ import (
 	"errors"
 	"fmt"
 	"net/http"
-	"net/url"
 	"strings"
 
 	"code.gitea.io/gitea/models/db"
@@ -181,14 +180,10 @@ func ChangeProjectStatus(ctx *context.Context) {
 	id := ctx.ParamsInt64(":id")
 
 	if err := project_model.ChangeProjectStatusByRepoIDAndID(ctx, ctx.Repo.Repository.ID, id, toClose); err != nil {
-		if project_model.IsErrProjectNotExist(err) {
+		ctx.NotFoundOrServerError("ChangeProjectStatusByRepoIDAndID", project_model.IsErrProjectNotExist, err)
-			ctx.NotFound("", err)
-		} else {
-			ctx.ServerError("ChangeProjectStatusByIDAndRepoID", err)
-		}
 		return
 	}
-	ctx.JSONRedirect(ctx.Repo.RepoLink + "/projects?state=" + url.QueryEscape(ctx.Params(":action")))
+	ctx.JSONRedirect(fmt.Sprintf("%s/projects/%d", ctx.Repo.RepoLink, id))
 }
 
 // DeleteProject delete a project