Revert "Add tree filter to Schema Designer Filter button (#20754)"

[aasimkhan30]

Description

Reverting the tree in schema designer filter to prevent issues happening in #20890
After revert:

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	5293 KB	5287 KB	⚪ -6 KB ( 0% )
sql-database-projects VSIX	5669 KB	5669 KB	⚪ 0 KB ( 0% )
data-workspace VSIX	null KB	543 KB	⚪ 543 KB ( 0% )

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 66.67%. Comparing base (b1b2b41) to head (5ab52dc).

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #20900   +/-   ##
=======================================
  Coverage   66.67%   66.67%           
=======================================
  Files         210      210           
  Lines       20287    20287           
  Branches     2641     2641           
=======================================
  Hits        13526    13526           
  Misses       6663     6663           
  Partials       98       98           

🚀 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.