use longest match instead of endsWith

[simonLeary42]

You would think that the argument would be a form token, but actually it's a string that may or may not start with a form token:

ondemand/apps/dashboard/app/javascript/dynamic_forms.js

Line 757 in 87e93f6

let match = str.match(`^${token}{1}`);

But then later during an edge case, the argument is expected to also /end/ with a form token:

ondemand/apps/dashboard/app/javascript/dynamic_forms.js

Line 778 in 87e93f6

return element.endsWith(snake_case_str);

So sometimes it's OK to pass a string ClusterFoo, but other times it's only ok to pass a form token Cluster. I don't think this makes sense. A more reliable way to handle this edge case would be to compare the string length of the matched tokens.

[simonLeary42]

marked as draft until I add test cases