x/tools/gopls: accepting autocomplete suggestion within invalid code results in unwanted code deletion #77481

What version of Go, VS Code & VS Code Go extension are you using?

• Run go version to get version of Go from the VS Code integrated terminal.
  • go version go1.25.6 windows/amd64
• Run gopls -v version to get version of Gopls from the VS Code integrated terminal.
  • golang.org/x/tools/gopls v0.21.0
• Run code -v or code-insiders -v to get version of VS Code or VS Code Insiders.
  • 1.109.0 bdd88df003631aaa0bcbe057cb0a940b80a476fa x64
• Check your installed extensions to get the version of the VS Code Go extension
  • 0.52.2

Describe the bug

When editing not correct go code, if autocompleted is initiated and accepted all incorrect code is deleted.
Here is example of code I edit

`
package editor

type Theme struct {
MainTextColor colore

MenuHeight      float32 = 20
ToolbarHeight   float32 = MenuHeight
TabButtonWidth  float32 = 60
TabButtonHeight float32 = 30

}
`

I am editing line MainTextColor colore, autocomplete emerges and propose me to autocomplete colore to colorex. If I accept, half of code is deleted and I get this

`
package editor

import "github.com/igadmg/goex/image/colorex"

type Theme struct {
MainTextColor colore
colorex
MenuHeight float32
}
`

Screenshots or recordings

Here is a vide recording of that https://imgur.com/a/YeEU0Xl