fix(guild): Creating a template actually creates a template

[Jiralite]

Please describe the changes this PR makes and why it should be merged:
This makes template creation actually create a template.

Status and versioning classification:

• Code changes have been tested against the Discord API, or there are no code changes
• I know how to update typings and have done so, or typings don't need updating

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2 Skipped Deployments

Name	Status	Preview	Comments	Updated (UTC)
discord-js	⬜️ Ignored (Inspect)			Aug 4, 2025 9:47am
discord-js-guide	⬜️ Ignored (Inspect)			Aug 4, 2025 9:47am

[codecov]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 43.86%. Comparing base (c0c1ac2) to head (a43b9e3).
⚠️ Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
packages/core/src/api/guild.ts	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #11030      +/-   ##
==========================================
- Coverage   43.87%   43.86%   -0.01%     
==========================================
  Files         310      310              
  Lines       17777    17774       -3     
  Branches     1749     1748       -1     
==========================================
- Hits         7799     7797       -2     
+ Misses       9966     9965       -1     
  Partials       12       12              

Flag	Coverage Δ
core	0.88% <0.00%> (ø)

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[vladfrangu]

This is technically a patch LOL