feat(SQL 题): 增删改题的期望结果标出执行后变了的格子，删掉的行写清是哪几行

学生原来只能拿两张表逐格对，看不出要改的是哪几行。现在改过的格子、新插的行标黄，
删掉的行在表下面写「删掉了 2 行（id 是 2、3）」。按第一列配对，对不上就不标。
数据表和期望结果抽成一个组件，后台出题页的预览也用它。
题型判断统一走契约的 isSqlProblem()。

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/web/src/oj/problem/components/SubmissionResult.vue

@@ -1,7 +1,7 @@
 <script setup lang="ts">
 import { Icon } from "@iconify/vue"
 import { useThemeVars } from "naive-ui"
-import { HINT_MIN_FAILURES, hintLevelLabel } from "@oj2/contract"
+import { HINT_MIN_FAILURES, hintLevelLabel, isSqlProblem } from "@oj2/contract"
 import type { JudgeCaseResult } from "@oj2/contract"
 import { JUDGE_STATUS, SubmissionStatus } from "utils/constants"
 import {
@@ -215,7 +215,7 @@ const submissionStore = useSubmissionStore()
 const customRunHint = computed(() => {
   if (!sampleCheck.value?.passed || props.peer) return ""
   const problem = problemStore.problem
-  if (!problem || problem.sqlConfig) return ""
+  if (!problem || isSqlProblem(problem)) return ""
   // 例子里出现过的数不算：例子已经对了，拿它们再试一遍没用
   const inSamples = new Set(
     problem.samples.flatMap(