fix(torii): ensure torii doesn't stop on model processor fail

[glihm]

Description

When a model that is not registered is emitted in an event, which can be done simply by calling world.set_entity with wrong data.

This causes Torii to fail and be taken in an infinite loop.

Related issue

Closes #1794.

Tests

Test will be done in #1679.

Added to documentation?

• README.md
• Dojo Book
• No documentation needed

Checklist

• I've formatted my code (scripts/prettier.sh, scripts/rust_fmt.sh, scripts/cairo_fmt.sh)
• I've linted my code (scripts/clippy.sh, scripts/docs.sh)
• I've commented my code
• I've requested a review after addressing the comments

[codecov]

Codecov Report

Attention: Patch coverage is 62.50000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 68.50%. Comparing base (e87118d) to head (0710ce3).

Files	Patch %	Lines
crates/torii/core/src/engine.rs	60.00%	2 Missing ⚠️
crates/torii/core/src/sql.rs	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2093      +/-   ##
==========================================
- Coverage   68.50%   68.50%   -0.01%     
==========================================
  Files         331      331              
  Lines       41280    41283       +3     
==========================================
+ Hits        28278    28279       +1     
- Misses      13002    13004       +2     

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