Crash report: `The "listener" argument must be of type Function`

Bug Description

App crashed

Steps to Reproduce

1. Go to ...
2. Click on ...
   ...

Error

TypeError: The "listener" argument must be of type Function. Received type undefined

Stacktrace

TypeError: The "listener" argument must be of type Function. Received type undefined
    at l (chrome-extension://nlbmnnijcnlegkjjpcfjclmcfggfefdm/js/cxWeb3.js:18:185254)
    at r.a.removeListener (chrome-extension://nlbmnnijcnlegkjjpcfjclmcfggfefdm/js/cxWeb3.js:18:188689)
    at Object.removeListener (chrome-extension://nlbmnnijcnlegkjjpcfjclmcfggfefdm/js/cxWeb3.js:18:67940)
    at https://app.uniswap.org/static/js/main.1cc75114.chunk.js:1:216961
    at Lu (https://app.uniswap.org/static/js/4.7be9d8b6.chunk.js:2:1517853)
    at t.unstable_runWithPriority (https://app.uniswap.org/static/js/4.7be9d8b6.chunk.js:2:1535801)
    at Hi (https://app.uniswap.org/static/js/4.7be9d8b6.chunk.js:2:1458159)
    at Mu (https://app.uniswap.org/static/js/4.7be9d8b6.chunk.js:2:1517449)
    at https://app.uniswap.org/static/js/4.7be9d8b6.chunk.js:2:1517360
    at N (https://app.uniswap.org/static/js/4.7be9d8b6.chunk.js:2:1534860)

Device data

{
  "ua": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36/10csO9CgK-99",
  "browser": {
    "name": "Chrome",
    "version": "90.0.4430.212",
    "major": "90"
  },
  "engine": {
    "name": "Blink",
    "version": "90.0.4430.212"
  },
  "os": {
    "name": "Windows",
    "version": "10"
  },
  "device": {},
  "cpu": {
    "architecture": "amd64"
  }
}

The stack trace points to the Chrome extension bundle js/cxWeb3.js and the app.uniswap.org static JavaScript bundles; start by reproducing the crash in Chrome 90 with the reported environment. Trace the listener removal path from those entry points and confirm the reported action no longer crashes with an undefined listener.