Fix SDK 9.0.200 global.json pinning causing eval timeouts (#542)

Add rollForward: latestFeature to all global.json entries that pin SDK 9.0.200
so that any 9.0.xxx SDK satisfies the requirement. Without this, machines with
only 9.0.3xx installed fail all dotnet commands during evaluation, causing the
model to burn its entire timeout budget on failed bash retries.

tests/dotnet-test/mtp-hot-reload/eval.yaml

@@ -59,7 +59,8 @@ scenarios:
           content: |
             {
               "sdk": {
-                "version": "9.0.200"
+                "version": "9.0.200",
+                "rollForward": "latestFeature"
               }
             }
     assertions:
@@ -218,7 +219,8 @@ scenarios:
           content: |
             {
               "sdk": {
-                "version": "9.0.200"
+                "version": "9.0.200",
+                "rollForward": "latestFeature"
               }
             }
     assertions:
@@ -278,7 +280,8 @@ scenarios:
           content: |
             {
               "sdk": {
-                "version": "9.0.200"
+                "version": "9.0.200",
+                "rollForward": "latestFeature"
               }
             }
     assertions:
@@ -347,7 +350,8 @@ scenarios:
           content: |
             {
               "sdk": {
-                "version": "9.0.200"
+                "version": "9.0.200",
+                "rollForward": "latestFeature"
               }
             }
     assertions:
@@ -485,7 +489,8 @@ scenarios:
           content: |
             {
               "sdk": {
-                "version": "9.0.200"
+                "version": "9.0.200",
+                "rollForward": "latestFeature"
               }
             }
     assertions:

tests/dotnet-test/mtp-hot-reload/fixtures/mtp-mstest-hotreload-installed/global.json

@@ -1,5 +1,6 @@
 {
   "sdk": {
-    "version": "9.0.200"
+    "version": "9.0.200",
+    "rollForward": "latestFeature"
   }
 }

tests/dotnet-test/mtp-hot-reload/fixtures/mtp-mstest-sdk9/global.json

@@ -1,5 +1,6 @@
 {
   "sdk": {
-    "version": "9.0.200"
+    "version": "9.0.200",
+    "rollForward": "latestFeature"
   }
 }

tests/dotnet-test/run-tests/eval.yaml

@@ -317,7 +317,8 @@ scenarios:
           content: |
             {
               "sdk": {
-                "version": "9.0.200"
+                "version": "9.0.200",
+                "rollForward": "latestFeature"
               }
             }
         - path: "ServiceTests.cs"

tests/dotnet-test/run-tests/fixtures/mtp-mstest-sdk9/global.json

@@ -1,5 +1,6 @@
 {
   "sdk": {
-    "version": "9.0.200"
+    "version": "9.0.200",
+    "rollForward": "latestFeature"
   }
 }

tests/dotnet-test/run-tests/fixtures/mtp-xunit-v3/global.json

@@ -1,5 +1,6 @@
 {
   "sdk": {
-    "version": "9.0.200"
+    "version": "9.0.200",
+    "rollForward": "latestFeature"
   }
 }