Feat: Limit the iteration start node to only be the source node #4242 (#4260)

### What problem does this PR solve?

Feat: Limit the iteration start node to only be the source node #4242

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/locales/en.ts

@@ -1093,6 +1093,9 @@ This delimiter is used to split the input text into several text pieces echo of
         minus: 'Minus',
         semicolon: 'Semicolon',
       },
+      addVariable: 'Add variable',
+      variableSettings: 'Variable settings',
+      globalVariables: 'Global variables',
     },
     footer: {
       profile: 'All rights reserved @ React',

web/src/locales/zh-traditional.ts

@@ -1030,6 +1030,8 @@ export default {
         minus: '減號',
         semicolon: '分號',
       },
+      addVariable: '新增變數',
+      variableSettings: '變數設定',
     },
     footer: {
       profile: '“保留所有權利 @ react”',

web/src/locales/zh.ts

@@ -1074,6 +1074,8 @@ export default {
         minus: '减号',
         semicolon: '分号',
       },
+      addVariable: '新增变量',
+      variableSettings: '变量设置',
     },
     footer: {
       profile: 'All rights reserved @ React',