Incorrect string highlighting for "undefined" in Pinia state

[undefined-ux]

In Vue Devtools 7.7.7, when a Pinia store contains a string value "undefined", it is rendered as the actual undefined value instead of a string.

Minimal Demo:

const useTestStore = defineStore('test', {
  state: () => ({
    value: "undefined"
  })
})

[undefined-ux]

The issue seems to come from getInspectorStateValueType, where the string "undefined" is treated as a null-like value. This behavior was introduced in commit d4f7bbea47ced96a61aa488653ae87707c00ea2c. Was this intentional for some edge case, or is it an unintended regression?

  if (value == null || value === UNDEFINED || value === 'undefined') {
    return 'null'
  }