feat(backend-native): Add forceContinueWait parameter to /cubesql API endpoint

[MazterQyou]

Check List

• Tests have been run in packages where changes have been made if available
• Linter has been run for changed code
• Tests for the changes have been added if not covered yet
• Docs have been added / updated if required

Description of Changes Made

This PR adds forceContinueWait optional boolean parameter to /cubesql API endpoint which, when enabled, surfaces Continue wait errors over HTTP transport instead of looping and holding the connection indefinitely.

[codecov]

Codecov Report

❌ Patch coverage is 90.90909% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 83.29%. Comparing base (159f528) to head (50ee13d).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
rust/cubesql/cubesql/src/compile/engine/df/scan.rs	66.66%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #10385       +/-   ##
===========================================
+ Coverage   57.49%   83.29%   +25.80%     
===========================================
  Files         222      250       +28     
  Lines       17334    74697    +57363     
  Branches     3544        0     -3544     
===========================================
+ Hits         9966    62222    +52256     
- Misses       6831    12475     +5644     
+ Partials      537        0      -537     

Flag	Coverage Δ
cube-backend	?
cubesql	83.29% <90.90%> (?)

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[hank-sq]

I actually just filed this #10387 - funny timing! Thanks for working on this.