[regression] Code completion of string in JSON file produces extra quote

[HighCommander4]

Does this issue occur when all extensions are disabled?: Yes

• VS Code Version: 1.94.2
• OS Version: Debian 11

Steps to Reproduce

1. Create a file named test.json with the following content (^ indicates the cursor location):

   {
     "values": [
       {
         "key": "value"
       },
       {
         ^
       }
     ]
   }
   

2. At the indicated cursor location (^), type a double quote ("). Note that this causes vscode to auto-insert a second quote after the cursor. (This, in and of itself, is fine.)
3. Trigger code completion (if it's not triggerred automatically). Select key which is offered as a result.

Actual results

The resulting file content is:

{
  "values": [
    {
      "key": "value"
    },
    {
      "key""
    }
  ]
}

Not the extra quote after "key".

Expected results

The resulting file content is:

{
  "values": [
    {
      "key": "value"
    },
    {
      "key"
    }
  ]
}

This is a regression in vscode 1.94 compared to 1.93.