Describe the bug

When creating two cells with global variables of the same name it complains, but even after deleting, it doesn't let you run the remaining cell. See below:

• define variable in cell

• define same variable in second cell
  • both errors show which cell it conflicts with

• delete second cell
  • first cell still has error AND shows * for the offending cell, no cell number, just bullet point.

• Delete remaining cell and make an entirely new cell with the same variable
  • still doesn't work, now shows two blank bullet points (one for each of the first two cells

Environment

{
"marimo": "0.2.8",
"OS": "Darwin",
"OS Version": "23.3.0",
"Processor": "arm",
"Python Version": "3.9.13",
"Binaries": {
"Chrome": "122.0.6261.69",
"Node": "--"
},
"Requirements": {
"black": "24.2.0",
"click": "8.1.7",
"importlib_resources": "6.1.2",
"jedi": "0.19.1",
"pymdown-extensions": "10.7",
"starlette": "0.37.1",
"tomlkit": "0.12.3",
"typing_extensions": "4.10.0",
"uvicorn": "0.27.1"
}
}

Code to reproduce

See above for description on reproducing. Its more steps then just code so that seemed better.