Fix incorrect NotFound conditions in org/projects.go (#23384) (#23395)

Backport #23384

A part of https://github.com/go-gitea/gitea/pull/22865

user/org project's `RepoID` is always 0, we need to check `OwnerID`

Co-authored-by: yp05327 <576951401@qq.com>

routers/web/org/projects.go

@@ -193,7 +193,7 @@ func DeleteProject(ctx *context.Context) {
 		}
 		return
 	}
-	if p.RepoID != ctx.Repo.Repository.ID {
+	if p.OwnerID != ctx.ContextUser.ID {
 		ctx.NotFound("", nil)
 		return
 	}
@@ -226,7 +226,7 @@ func EditProject(ctx *context.Context) {
 		}
 		return
 	}
-	if p.RepoID != ctx.Repo.Repository.ID {
+	if p.OwnerID != ctx.ContextUser.ID {
 		ctx.NotFound("", nil)
 		return
 	}
@@ -260,7 +260,7 @@ func EditProjectPost(ctx *context.Context) {
 		}
 		return
 	}
-	if p.RepoID != ctx.Repo.Repository.ID {
+	if p.OwnerID != ctx.ContextUser.ID {
 		ctx.NotFound("", nil)
 		return
 	}