Fix "Add to Watch" from hover window using "hover" instead of variable name

[Copilot]

When adding a variable to watch from the hover window context menu, the watch entry displays "hover" as the variable name instead of the actual expression. Adding from the variables window works correctly.

Root Cause

run_hover() passes wrong argument order to variables.createRef():

-- Before (incorrect - evaluateName gets "hover", context gets nil)
local var = variables.createRef(res, "hover")

-- After (correct - evaluateName gets expression, context gets "hover")
local var = variables.createRef(res, expression, "hover")

Function signature is createRef(value, evaluateName, context). The bug caused evaluateName to be hardcoded as "hover" instead of using the actual variable expression.

Changes

• extension/script/backend/worker/evaluate.lua: Fix parameter order in run_hover() to match working implementations in run_watch() and run_repl()

Original prompt

这个调试器有个bug，在断点后的hover窗口内右键一个字段点击“添加到监视”后，添加上去的变量名的第一个节点名会变成 "hover" 而不是变量自己的名字。但是在变量窗口添加监视是正常的。你能找出并修复这个bug吗？

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[sumneko]

@copilot 请使用中文

[Copilot]

@copilot 请使用中文

明白了。代码修改已完成（commit cfa228c）。

修复说明：

• 问题：从悬停窗口添加监视时，变量名显示为"hover"而不是实际的变量名
• 原因：run_hover()函数向variables.createRef()传递参数顺序错误
• 修复：将variables.createRef(res, "hover")改为variables.createRef(res, expression, "hover")
• 结果：现在从悬停窗口添加监视时会正确显示变量名

[Copilot]

Pull request overview

This PR fixes a bug where adding a variable to watch from the hover window context menu incorrectly displayed "hover" as the variable name instead of the actual expression.

Key Change:

• Fixed parameter order in variables.createRef() call within run_hover() to pass expression as the evaluateName parameter instead of the hardcoded string "hover"

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