chore: set jit=off per request instead of global settings to prevent breaking servers

[mswertz]

What are the main changes you did:

• replace the manual jit=off by a per connection jit=off so we don't have added complexity for sysadmins

how to test:

• see if there are regressions for Cannot view Cohorts table due to time out error #3652
• see if there are regressions for Query in networks table runs out of time for data model v 3.12 on dev server, not on data catalogue server #3476

todo:

• updated docs in case of new feature

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[MaxPostema]

Good change, would have saved me and @Fernananas some confusion.

I can't find any regressions.