fix(v2): add 'Others' to radio field in logic creation

[wanlingt]

Problem

Radio field's 'Others' does not show up in logic creation

Closes #4800

Solution

The check for 'Others' was already present in the form logic (isConditionFulfilled), it just wasn't being reflected in the options provided for Radio field. As the presence of 'Others' is reflected in othersRadioButton and does not exist in a field's fieldOptions, I added 'Others' to the list of options shown in logic (conditionValueItems).

Breaking Changes

• No - this PR is backwards compatible

AFTER:

Tests

• - Include 'Others' in radio field logic for 'equals to' conditions. Form should reflect logic, submission should work as normal
• - Include 'Others' in radio field logic for 'either' conditions. Form should reflect logic, submission should work as normal

[justynoh]

do we need to add for checkbox also?

[wanlingt]

do we need to add for checkbox also?

we don't do logic for checkbox so noope

[karrui]

lgtm