Update SDK version from 8.0.404 to 8.0.415 (#5543)

* Update SDK version from 8.0.404 to 8.0.415

* Add .NET SDK installation step to YAML template

Added a task to install .NET SDK 8.0.415 on the agent.

Author: gladjohn

build/template-run-mi-e2e-imds.yaml

@@ -4,6 +4,15 @@ parameters:
 
 steps:
 
+# Ensure the exact SDK is available on the agent
+- task: UseDotNet@2
+  displayName: 'Install .NET SDK 8.0.415'
+  inputs:
+    packageType: 'sdk'
+    version: '8.0.415'
+    includePreviewVersions: false
+    performMultiLevelLookup: true
+
 # Restore 
 - task: DotNetCoreCLI@2
   displayName: Restore E2E project

global.json

@@ -1,6 +1,6 @@
 {
     "sdk": {
-        "version": "8.0.404",
+        "version": "8.0.415",
         "rollForward": "latestFeature"
     }
 }