View source for Wrongly rendered option labels in form fields under some circumstances

===Example===

The field definition:

<source lang="xml">
<field name="moderator" type="radio" label="COM_EXAMPLE_SPEAKER_TYPE">
    <option value="0">COM_EXAMPLE_SPEAKER</option>
    <option value="1">COM_EXAMPLE_SPEAKER_MODERATOR</option>
</field>
</source>

1) The name of the field is <code>moderator</code>.

2) Look at the language strings of the option labels:

<code>COM_EXAMPLE_SPEAKER</code>

<code>COM_EXAMPLE_SPEAKER_MODERATOR</code>

3) At least the second one is present in a language ini file of the extension or otherwise loaded.


'''Resulting issue:''' The first one will lead to an error (= wrong option label) because Joomla magic is transforming it to <code>COM_EXAMPLE_SPEAKER_MODERATOR</code> while collecting the options for the output.

'''In other words:''' Joomla combines the language string <code>COM_EXAMPLE_SPEAKER</code> and the field name <code>moderator</code> to a wrong label <code>COM_EXAMPLE_SPEAKER_MODERATOR</code> because <code>COM_EXAMPLE_SPEAKER_MODERATOR</code> exists in the language ini file.