fix: Planet and faction sprites displaying wrong sprites

[OH296]

Description of changes

• changes sprite call method for star faction owner symbol
• add previously placeholder frame in planet sprite set

Reasons for changes

• systems were displaying wrong owner sprite
• planets were displaying incorrect sprites

Summary by Sourcery

Add a missing frame to the planet sprite sheet and fix the display of faction sprites for stars.

Bug Fixes:

• Fixed an issue where stars were displaying the wrong owner sprite.
• Fixed an issue where planets were displaying incorrect sprites.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request fixes an issue with incorrect sprite display for planets and faction symbols. It adds a missing frame to the planet sprite sheet and corrects the method used to call faction sprites, ensuring the correct sprites are displayed.

File-Level Changes

Change	Details	Files
Added a missing frame to the planet sprite sheet and updated the animation length.	Added a new frame to the beginning of the sprite sheet. Increased the animation length from 20 to 21 to accommodate the new frame. Shifted subsequent frames in the animation timeline by one frame to accommodate the new frame.	sprites/spr_planets/spr_planets.yy
Corrected the faction sprite indexing to display the correct symbol.	Removed the addition of 1 to the owner index when determining the faction sprite to display. Replaced direct sprite calls with a consistent draw_sprite_ext call using the corrected index.	objects/obj_star/Draw_0.gml

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[sourcery-ai]

Hey @OH296 - I've reviewed your changes - here's some feedback:

Overall Comments:

• Consider expanding the commit message to better explain the technical changes made - specifically the sprite caching removal and frame index adjustments. This helps future maintainers understand the rationale.

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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