Add PartitionAllocPermissiveMte to fieldtrial_testing_config.json

Change-Id: I33919e572396fb32d37626121647fe3ed097d05e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5999855
Commit-Queue: Keishi Hattori <keishi@chromium.org>
Reviewed-by: Takashi Sakamoto <tasak@google.com>
Cr-Commit-Position: refs/heads/main@{#1379709}

testing/variations/fieldtrial_testing_config.json

@@ -16362,6 +16362,21 @@
             ]
         }
     ],
+    "PartitionAllocPermissiveMte": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "PartitionAllocPermissiveMte"
+                    ]
+                }
+            ]
+        }
+    ],
     "PartitionAllocUnretainedDanglingPtr": [
         {
             "platforms": [