feat(接口测试): 修复报告列表查不到用例集合报告的问题

--bug=1019678 --user=宋天阳 【接口测试】测试报告 - 用例报告列表不显示用例集合报告了
https://www.tapd.cn/55049933/s/1296742

api-test/backend/src/main/java/io/metersphere/base/mapper/ext/ExtApiDefinitionExecResultProvider.java

@@ -49,10 +49,14 @@ public class ExtApiDefinitionExecResultProvider {
                     .append(result.getContent())
                     .append("','")
                     .append(result.getEnvConfig());
-            //判断有没有关联的测试报告ID
+            //判断有没有关联的测试报告ID. 要注意如果赋null的话前后不能有 ' '，否则会变成字符串'null'
+            if (StringUtils.isBlank(result.getRelevanceTestPlanReportId())) {
+                sqlList.append("', null");
+            } else {
                 sqlList.append("','")
-                    .append(StringUtils.defaultIfBlank(result.getRelevanceTestPlanReportId(), "null"))
+                        .append(result.getRelevanceTestPlanReportId())
                         .append("'");
+            }
             sqlList.append(")");
             if (i < list.size() - 1) {
                 sqlList.append(",");

api-test/backend/src/main/java/io/metersphere/base/mapper/ext/ExtApiScenarioReportProvider.java

@@ -51,10 +51,14 @@ public class ExtApiScenarioReportProvider {
                     .append(result.getReportType())
                     .append("','")
                     .append(result.getEnvConfig());
-            //判断有没有关联的测试报告ID
+            //判断有没有关联的测试报告ID. 要注意如果赋null的话前后不能有 ' '，否则会变成字符串'null'
+            if (StringUtils.isBlank(result.getRelevanceTestPlanReportId())) {
+                sqlList.append("', null");
+            } else {
                 sqlList.append("','")
-                    .append(StringUtils.defaultIfBlank(result.getRelevanceTestPlanReportId(), "null"))
+                        .append(result.getRelevanceTestPlanReportId())
                         .append("'");
+            }
             sqlList.append(")");
             if (i < list.size() - 1) {
                 sqlList.append(",");

api-test/frontend/src/business/home/components/chart/CountChart.vue

@@ -93,7 +93,7 @@ export default {
       let borderWidth = 0;
       let colorArr = ['#DEE0E3', '#DEE0E3', '#DEE0E3', '#DEE0E3'];
       if (this.getTotal() > 0) {
-        colorArr = ['#AA4FBF', '#FFD131', '#10CECE', '#4261F6',];
+        colorArr = ['#AA4FBF', '#FAD355', '#14E1C6', '#4E83FD',];
         borderWidth = 3;
         dataIsNotEmpty = true;
         protocolData = [