Warn about loops in Form expression

[barmac]

Problem you would like to solve

With the new Expression field, it is possible to create a loop which causes the form output to flicker.

Proposed solution

Have a loop detection mechanism, and warn about the loop in the problems panel.

Alternatives considered

Leave it as is.

Additional context

Sample form:

{
  "components": [
    {
      "computeOn": "change",
      "label": "Expression",
      "type": "expression",
      "layout": {
        "row": "Row_14mocuo",
        "columns": null
      },
      "id": "Field_1v04vn8",
      "key": "foo",
      "expression": "=expression_r0l1s"
    },
    {
      "computeOn": "change",
      "label": "Expression",
      "type": "expression",
      "layout": {
        "row": "Row_1aqvlp7",
        "columns": null
      },
      "id": "Field_0b80s9m",
      "key": "expression_r0l1s",
      "expression": "=foo ** (0.0001)"
    }
  ],
  "type": "default",
  "id": "Form_1eamzum",
  "executionPlatform": "Camunda Cloud",
  "executionPlatformVersion": "8.5.0",
  "exporter": {
    "name": "Camunda Modeler",
    "version": "5.22.0-rc.2"
  },
  "schemaVersion": 16
}