Fix CodeMirror wrapped-line cursor geometry

{
  "backend": {
    "author": {
      "email": "drschwabe@fastmail.com",
      "name": "Derrick Schwabe",
      "time": 1789357322
    },
    "commit": "git:sha1:3292785f7682e4ba10799937c5cfabad500001e5",
    "committer": {
      "email": "drschwabe@fastmail.com",
      "name": "Derrick Schwabe",
      "time": 1789357322
    },
    "manifest": "mmm-manifest:sha256:f32ed34bc8be1fe26a47b71277d3c77977b402001e997f5c8f1ef37a16516f90",
    "message": "Fix CodeMirror wrapped-line cursor geometry",
    "objectFormat": "sha1",
    "parents": [
      "git:sha1:b686de5f3bd75bda312afdcbdcf2ccef66c633ae"
    ],
    "ref": "refs/heads/master",
    "summary": "Fix CodeMirror wrapped-line cursor geometry",
    "tree": "git:sha1:49f30e070ffd8f128e78b70f8812b9ca923c42a5",
    "type": "git"
  },
  "issuedAt": "2026-09-15T14:29:57.009Z",
  "previous": "mmm-revision:sha256:c233d3a4c3950dc54b68633951e42628b1c93f1488c3e1359113d6f1b41d5fe4",
  "project": "mmm1np06566gf6u8fpyj84u2emf25l98qad36700d2nlep6jzqdknp8qkyd3xu",
  "protocol": "mmm/0-alpha",
  "sequence": 208,
  "type": "mmm/revision"
}