Revert number of working threads

[s-vitaliy]

Revert changes from #55 as it did not help

Checklist

• GitHub issue exists for this change.
• Unit tests added and they pass.
• Line Coverage is at least 80%.
• Review requested on latest commit.

[github-actions]

Coverage after merging revert-55 into main will be

0.00%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
src
Program.cs	0%	0%	0%	0%	17, 21–35, 35, 35–45, 48–50, 52
src/Models
SqlServerChangeTrackingStreamContext.cs	0%	0%	0%	0%	101–103, 107–109, 113–115, 118–120, 123, 18, 23, 28, 33, 40, 45, 50, 55, 60, 66, 69, 72, 75, 81, 85–86, 86, 86–88, 91–97
src/Services
SqlServerChangeTrackgingGraphBuilder.cs	0%	0%	0%	0%	24–28, 31–32, 34–36, 36, 36–45, 47–48, 50, 50, 50–58, 60–70, 72–74, 74, 74, 74, 74, 74, 74, 74, 74–77, 80, 80, 80, 80, 80, 80, 80, 80, 80–82, 85, 85, 85–89, 92–93, 95