## Bug description
I added an event (that exists) to an action, and now my action hangs forever.

I added an insight viewed event

w/ filters `insight == RETENTION` and `same_retention_and_cohortizing_event = false` – this appears to have broken my action where it does not load and I cannot edit it.

Cannot reproduce this same behavior locally.


## Expected behavior
- The action loads if the schema is correct.
-  If there's erroneous data it should load and let me edit it.

## How to reproduce

1. Create an action on Posthog cloud, in our main app
2. Add 'insight viewed' with filters `insight == RETENTION` and `same_retention_and_cohortizing_event = false`
3. The action will spin forever

## Environment

- [x] PostHog Cloud
- [ ] self-hosted PostHog, version/commit: _please provide_

## Additional context

[Sentry error](https://sentry.io/organizations/posthog/issues/2378948964/?project=1899813&referrer=slack)

Console errors 
<img width="1607" alt="Screen Shot 2021-05-03 at 5 45 39 PM" src="https://user-images.githubusercontent.com/5965891/116950024-b0d7a280-ac38-11eb-93c8-245390240532.png">
<img width="1167" alt="Screen Shot 2021-05-03 at 5 51 34 PM" src="https://user-images.githubusercontent.com/5965891/116950026-b208cf80-ac38-11eb-96e1-6a8f018f650a.png">



#### *Thank you* for your bug report – we love squashing them!

ee/clickhouse/models/property.py
params = {"k{}_{}".format(prepend, idx): prop.key, "v{}_{}".format(prepend, idx): prop.value}
        return (
            "AND toInt64OrNull(trim(BOTH '\"' FROM replaceRegexpAll({left}, ' ', ''))) < %(v{prepend}_{idx})s".format(
                idx=idx,
                prepend=prepend,
                left=denormalized
                if is_denormalized
                else "visitParamExtractRaw({prop_var}, %(k{prepend}_{idx})s)".format(
                    idx=idx, prepend=prepend, prop_var=prop_var,
                ),
            ),
            params,
        )
    else:
        if is_json(prop.value) and not is_denormalized:
            clause = "AND has(%(v{prepend}_{idx})s, replaceRegexpAll(visitParamExtractRaw({prop_var}, %(k{prepend}_{idx})s),' ', ''))"
            params = {
                "k{}_{}".format(prepend, idx): prop.key,
                "v{}_{}".format(prepend, idx): box_value(prop.value, remove_spaces=True),
            }
        else:
            clause = "AND has(%(v{prepend}_{idx})s, {left})"
            params = {"k{}_{}".format(prepend, idx): prop.key, "v{}_{}".format(prepend, idx): box_value(prop.value)}
        return (
            clause.format(
                left=denormalized if is_denormalized else json_extract, idx=idx, prepend=prepend, prop_var=prop_var
            ),
            params,
        )
def box_value(value: Any, remove_spaces=False) -> List[Any]: