fix(code-editor): allow creating hooks with hook type as name

[laurentlp]

This PR adds the possibility to create a hook with the name of the hook type. Before this change, the resulting filename would be .js since we were removing the hook type from its name (not sure why as there seems to be no impact of doing so).

e.g. Creating an after_incoming_middleware hook named: after_incoming_middleware.js

Closes botpress/v12#1580

[linear]

DEV-2202 [BUG] Creating a hook named as its type does not work (botpress/botpress botpress/v12#1580)

Describe the bug
When adding a new hook, if you name it with the same name as the type of hook it is, it will result in a file named .js

To Reproduce

simplescreenrecorder-2021-12-21_16.17.52.mp4

Expected behavior
We should be able to name an after_incoming_middleware hook after_incoming_middleware.js without problem

botpress/borpress botpress/v12#1580 by @ laurentlp

[allardy]

It lets you create a file with the name, but it will not let you open it

Actually prevents you from editing any existing hook

[laurentlp]

Actually prevents you from editing any existing hook

@allardy Good catch, it should be fixed now!

[samuelmasse]

LGTM