On empty password set the emptyPasswordInput as true

[allancascante]

Description

Adding support to allow empty/blank password in connections; this will also require a change in STS (on this PR) to make the password field as optional. There are no UI changes, if user doesn't set the password and when connecting confirm it by not enter it, in the quick pick, the corresponding flag will be set to true.

This closes this issue: #20288

Code Changes Checklist

• New or updated unit tests added
• All existing tests pass (npm run test)
• Code follows contributing guidelines
• Telemetry/logging updated if relevant
• No regressions or UX breakage

Reviewers: Please read our reviewer guidelines

[github-actions]

PR Changes

Category	Target Branch	PR Branch	Difference
vscode-mssql VSIX	5289 KB	5288 KB	⚪ -1 KB ( 0% )
sql-database-projects VSIX	5668 KB	5668 KB	⚪ 0 KB ( 0% )
data-workspace VSIX	null KB	538 KB	⚪ 538 KB ( 0% )

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 66.15%. Comparing base (1cf305d) to head (2b717c0).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #20860      +/-   ##
==========================================
+ Coverage   66.13%   66.15%   +0.02%     
==========================================
  Files         210      210              
  Lines       20107    20108       +1     
  Branches     2618     2619       +1     
==========================================
+ Hits        13297    13302       +5     
+ Misses       6713     6708       -5     
- Partials       97       98       +1     

Files with missing lines	Coverage Δ
...ensions/mssql/src/controllers/connectionManager.ts	52.07% <100.00%> (+0.69%)	⬆️

... and 1 file with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.