Re-raise in collection.exists() if status code is not 404

[tsmith023]

Closes #1799

[orca-security-eu]

Orca Security Scan Summary

Status	Check	Issues by priority
Passed	Infrastructure as Code	0   0   0   0	View in Orca
Passed	SAST	0   0   0   0	View in Orca
Passed	Secrets	0   0   0   0	View in Orca
Passed	Vulnerabilities	0   0   0   0	View in Orca

[codecov-commenter]

Codecov Report

❌ Patch coverage is 73.68421% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 86.41%. Comparing base (6c17756) to head (965cdaa).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
weaviate/collections/collection/sync.py	20.00%	4 Missing ⚠️
mock_tests/test_collection.py	91.66%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1950   +/-   ##
=======================================
  Coverage   86.41%   86.41%           
=======================================
  Files         275      275           
  Lines       20007    20058   +51     
=======================================
+ Hits        17289    17334   +45     
- Misses       2718     2724    +6     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.