Nested private class field does not get mangled properly

[TimvdLippe]

Bug report or Feature request?

Bug

Version (complete output of terser -V or specific git commit)

5.7.2

Complete CLI command or minify() options used

// edit terser options
{
  module: true,
  compress: {},
  mangle: {
    properties: {
          regex: /^#\w+/,
        },
  },
  output: {},
  parse: {},
  rename: {},
}

terser input

"use strict";
class Foo {
    constructor(self) {
        this.#self = self;
    }
    #self;
    accessNestedPrivateField() {
        if (this.#self) {
            return this.#self.#self;
        }
        return "Not here";
    }
}
const one = new Foo();
const two = new Foo(one);
console.log(two.accessNestedPrivateField());

terser output or error

class e{constructor(e){this.#e=e}#e;accessNestedPrivateField(){return this.#e?this.#self.#e:"Not here"}}const s=new e,t=new e(s);console.log(t.accessNestedPrivateField());

Expected result

The this.#self.#e should be this.#e.#e instead.