[.NET 8 in-proc] Clean up to remove older release branches(inproc6,inproc8) from build YAML (#10148)

* Clean up to remove older release branches(inproc6,inproc8)

* Removed "dev" and "release/4x"

* Revert "Removed "dev" and "release/4x""

This reverts commit 4b713f8.

* Fix the NugetPackage publish step to use tfm suffix

Author: kshyju

azure-pipelines.yml

@@ -11,17 +11,15 @@ pr:
     - dev
     - in-proc
     - release/4.*
-    - release/inproc6/4.*
-    - release/inproc8/4.*
+    - release/in-proc
 
 trigger:
   branches:
     include:
     - dev
     - in-proc
     - release/4.*
-    - release/inproc6/4.*
-    - release/inproc8/4.*
+    - release/in-proc
 
 jobs:
 - job: InitializePipeline
@@ -53,7 +51,7 @@ jobs:
   dependsOn: InitializePipeline
   condition: and(succeeded(), or(ne(variables['Build.Reason'], 'PullRequest'), eq(dependencies.InitializePipeline.outputs['Initialize.BuildArtifacts'], true)))
   variables:
-    ${{ if or( eq( variables['Build.Reason'], 'PullRequest' ), and( not( contains( variables['Build.SourceBranch'], 'release/inproc6/4.' ) ), not( contains( variables['Build.SourceBranch'], 'release/inproc8/4.' ) ), not( contains( variables['Build.SourceBranch'], 'release/4.' ) ), not( contains( variables['Build.SourceBranch'], 'release/ExtensionsMetadataGenerator/' ) ) ) ) }}:
+    ${{ if or( eq( variables['Build.Reason'], 'PullRequest' ), and( not( contains( variables['Build.SourceBranch'], 'release/in-proc' ) ), not( contains( variables['Build.SourceBranch'], 'release/ExtensionsMetadataGenerator/' ) ) ) ) }}:
       suffixTemp: $(buildNumber)
       packSuffixSwitchTemp: --version-suffix $(buildNumber)
       emgSuffixSwitchTemp: --version-suffix ci$(buildNumber)
@@ -297,7 +295,7 @@ jobs:
       BuildDropPath: 'out/pkg/release'
       Verbosity: 'Information'
   - publish: out/pkg/release
-    artifact: NugetPackages
+    artifact: _NugetPackages.net$(minorVersionPrefix)
 
 - job: RunUnitTests
   strategy: 
@@ -621,10 +619,10 @@ jobs:
       path: '$(Build.ArtifactStagingDirectory)/PrivateSiteExtension'
 
   - task: DownloadPipelineArtifact@2
-    displayName: 'Download _Packages.net8 Artifact'
+    displayName: 'Download _NugetPackages.net8 Artifact'
     inputs:
       buildType: 'current'
-      artifact: '_Packages.net8'
+      artifact: '_NugetPackages.net8'
       path: '$(Build.ArtifactStagingDirectory)/packages'
 
   - task: DownloadPipelineArtifact@2