[azure-*-cpp] Remove cgmanifest.json during installation

[antkmsft]

Explanation: Azure/azure-sdk-for-cpp#6789

[antkmsft]

I have no idea why CI is failing. Is your CI broken?
It is failing for our another PR with unrelated changes (#34835) but we're not changing anything that should cause this. I think it has started to fail around October 8th.
I was trying to repro the failure locally, but I can't.

Feature Test [2/21] azure-core-cpp[core,winhttp]:x64-windows-static
Restored 1 package(s) from HTTP servers in 175 ms. Use --debug to see more details.
Removing 1/3 azure-core-cpp:x64-windows-static
Elapsed time to handle azure-core-cpp:x64-windows-static: 9.31 ms
Installing 2/3 wil:x64-windows-static@1.0.250325.1...
no such file or directory
D:\a\_work\1\s\scripts\azure-pipelines\test-modified-ports.ps1 : vcpkg feature testing failed; this is usually a bug in one of the features in the port(s) edited in this pull request. Check for failure logs attached to the run in Azure Pipelines.
At D:\a\_work\_temp\azureclitaskscript1760491660013_inlinescript.ps1:11 char:1
+ & scripts/azure-pipelines/test-modified-ports.ps1 -Triplet x64-window …
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo          : NotSpecified: (:) [Write-Error], WriteErrorException
+ FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorException,test-modified-ports.ps1

##[error]Script failed with exit code: 1
C:\Windows\system32\cmd.exe /D /S /C ""C:\Program Files\Microsoft SDKs\Azure\CLI2\wbin\az.cmd" account clear"
Finishing: *** Test Modified Ports

[dg0yt]

New vcpkg tool bug.

[BillyONeal]

microsoft/vcpkg-tool#1817 bug fix

[antkmsft]

Please merge #47829 first, and then I'll update this PR.

[antkmsft]

Ok, I've now decoupled this change from #47829 - that PR now includes the same changes, but only for Storage libraries, and this PR has everything else. So now, both this PR or that PR can get merged in any order (plus, storage will be using port-version 0 which always looks a tiny bit nicer).

This PR can now be merged without waiting on any other PR.