Macro editor allows to fill both parameters of a feature

Reproduction steps:

• Create a macro with two parameters "feat1" and "feat2" bound to same features "myfeat"
• Edit a new page and insert the macro
• Click on the radio button to select "feat1" and fill the value for it
• Click on the radio button to select "feat2" and fill the value for it
• Submit the form

Obtained result:

• the macro is inserted with both values for feat1 and feat2

Expected result:

• the form shouldn't be submitted, an error should be displayed indicating that a choice should be made. Or we could clear the value when switching the radio button