[BUG] Renaming variable breaks VAR definitions using equal sign

[Mercury37]

Describe the bug
Renaming variables defined as follows breaks the variable definition:
VAR ${var} = var1

Steps To Reproduce
Steps to reproduce the behavior:

1. Select variable (can be either reference or definition)
2. Click F2 to rename
3. Enter new name
4. Check variable definition

*** Test Cases ***
Example
    VAR    ${var} =    var1
    Log    ${var}

Expected behavior
The variable is renamed and the variable definition remains valid.

Screenshots/ Videos
The name of the variable is changed in the definition, but also the equal sign, whitespace preceding it (if present) and the ${} around the variable disappear.

Code_3kKzAYXTkV.mp4

Logs
None.

Additional context
This does not happen when the VAR syntax is used without equal sign.

Desktop (please complete the following information):

• VS Code Version: 1.98.2
• RobotCode Version: 1.0.2
• OS: Windows 10
• Python Version: 3.12.1
• RobotFramework Version: 7.2.2
• Additional tools: robocop