feat(@cubejs-backend/mssql-driver): Make MSSQL readOnly by default

[paveltiunov]

Check List

• Tests has been run in packages where changes 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

Issue Reference this PR resolves

#5563

[codecov]

Codecov Report

Base: 40.60% // Head: 40.60% // No change to project coverage 👍

Coverage data is based on head (9003984) compared to base (ca8fd4e).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5584   +/-   ##
=======================================
  Coverage   40.60%   40.60%           
=======================================
  Files         144      144           
  Lines       19354    19354           
  Branches     4903     4903           
=======================================
  Hits         7858     7858           
  Misses      11191    11191           
  Partials      305      305           

Flag	Coverage Δ
cube-backend	40.60% <ø> (ø)

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