Replace deprecated request package with axios in SQL Database Projects

[Copilot]

Description

The request npm package (deprecated since Feb 2020) was used for streaming file downloads in SQL Database Projects. Replaced with axios which the extension already uses elsewhere.

Key Changes:

• Removed request and @types/request dependencies
• Migrated HttpClient.download() to use axios streaming (responseType: 'stream')
• Fixed stream lifecycle management: error handlers registered before piping, proper cleanup on errors, guarded against multiple promise rejections

Implementation:

// Before: request.get() with callback-based streaming
let downloadRequest = request.get(downloadUrl, { timeout: DownloadTimeoutMs })
  .on('error', ...).on('response', ...).on('data', ...)
downloadRequest.pipe(fs.createWriteStream(targetPath))

// After: axios with promise-based streaming
const response = await axios({ method: 'GET', url: downloadUrl, responseType: 'stream', timeout })
response.data.on('error', handleError).on('data', ...)
response.data.pipe(writer)

Preserves all existing behavior: progress tracking, timeout handling, error reporting.

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

Original prompt

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This section details on the original issue you should resolve

<issue_title>[Bug]: SQL Project is using deprecated request npm package</issue_title>
<issue_description>### Description

SQL Project extension has a dependency on "request": "^2.88.2", which according to the npmjs is deprecated. The related issue request/request#3142 says that the library isn't using modern patterns, etc., and that a new module should be used. We need to remove this package and move to a recommended alternative.

Steps to Reproduce

1. Run yarn install or look in package.json

Affected Area

• Connection dialog (SQL Server | Azure browse/Fabric browse)
• Query editor
• Query results panel
• Object Explorer
• GitHub Copilot integration
• Preview/Edit data
• Table Designer
• Schema Designer
• Schema Compare
• Local SQL Server Container provisioning
• SQL database in Fabric provisioning
• DACPAC/BACPAC export/import
• SQL Database projects
• Query Plan Visualizer
• Other (please describe below)

If you selected "Other", please describe the affected area

No response

Environment Information

Latest main branch

Confirmation

• I have searched existing issues and couldn't find a match
• I want to work on this issue</issue_description>

<agent_instructions>Take a look at request/request#3142 if you need more context. Basically remove the deprecated package, and then find all uses of that package in the sql project extension in the extensions\sql-database-projects directory and update them. Also, if there are any sql project tests that use this package, get them too.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes [Bug]: SQL Project is using deprecated request npm package #21084

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💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.

[aasimkhan30]

NIT: Maybe consolidate bytes to megabytes calculation and add a function in general utils.ts.

[github-actions]

PR Changes

Category	Target Branch	PR Branch	Difference
vscode-mssql VSIX	5523 KB	5523 KB	⚪ 0 KB ( 0% )
sql-database-projects VSIX	5683 KB	4918 KB	🟢 -765 KB ( -13% )
data-workspace VSIX	544 KB	544 KB	⚪ 0 KB ( 0% )

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 67.89%. Comparing base (ed92a9a) to head (cf4583b).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #21085   +/-   ##
=======================================
  Coverage   67.89%   67.89%           
=======================================
  Files         230      230           
  Lines       22394    22394           
  Branches     2971     2971           
=======================================
  Hits        15204    15204           
  Misses       7059     7059           
  Partials      131      131           

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