Adds a maintenance door variant for Journalism access (#5552)

## Short description
<!-- What do you propose to change with your PR? -->
Adds `AirlockMaintJournalismLocked`, a maints door version of
`AirlockJournalismLocked`

## Why we need to add this
<!-- What is the reason for adding these changes? Please post links to
Discussions as well as Bug Reports here. Please describe how this will
change the game balance. -->
**Required for mapping!** 

This is a blocker for Radio Host getting mapped (and for Reporters
getting their doors swapped to Journalism access, too!).

## Media (Video/Screenshots)
<!--
If your PR contains in-game changes you must provide screenshots/videos
of the changes.
-->
<img width="621" height="468" alt="image"
src="https://github.com/user-attachments/assets/57a7d91f-4c14-4d42-a525-ae47e873572e"
/>
<img width="478" height="185" alt="image"
src="https://github.com/user-attachments/assets/579e2f8d-7c65-4467-9c1d-7c701f6e4228"
/>

fig. 1 - Maints door.

## Checks
<!-- check boxes for faster reviewing of your PR -->

- [x] I do not require assistance to complete the PR.
- [x] Before posting/requesting review of a PR, I have verified that the
changes work.
- [x] I have added screenshots/videos of the changes, or this PR does
not change in-game mechanics.
- [x] I affirm that my changes are licensed under the [MIT
License](https://github.com/ss14Starlight/space-station-14/blob/Starlight/LICENSE.TXT)
and grant permission for use in this repository under its conditions.

Author: CawsForConcern

Resources/Prototypes/_Starlight/Entities/Structures/Doors/Airlocks/access.yml

@@ -362,6 +362,13 @@
   - type: Sprite
     sprite: Structures/Doors/Airlocks/Standard/maint.rsi
 
+- type: entity
+  parent: AirlockJournalismLocked
+  id: AirlockMaintJournalismLocked
+  components:
+  - type: Sprite
+    sprite: Structures/Doors/Airlocks/Standard/maint.rsi
+
 # Courtroom
 - type: entity
   parent: AirlockSecurityLocked