fix(grouping): Fix snapshot tests (#97650)

This fixes a few small issues with our grouping snapshot tests:

- Now that the legacy grouping config is gone, we no longer consider line number or symbol in our grouping algorithm, so this removes the tests covering that behavior.

- The "uses context line over function" test did indeed do exactly that under the legacy config, but needed more data in order to do so under the newstyle config.

- The "no system frames" test... had a system frame? Can't blame that on the legacy config, but figured I might as well fix it while I was updating snapshot tests.

Author: lobsterkatie

tests/sentry/grouping/grouping_inputs/frame-skips-symbol-if-unknown.json

@@ -1,12 +1,16 @@
 {
+  "platform": "javascript",
   "stacktrace": {
     "frames": [
       {
         "function": "bar",
         "abs_path": "foo.py",
         "lineno": 1,
         "context_line": "foo bar",
-        "filename": "foo.py"
+        "filename": "foo.py",
+        "data": {
+          "sourcemap": "http://dogs.are.great/sit/stay.js.map"
+        }
       }
     ]
   }

tests/sentry/grouping/grouping_inputs/frame-uses-context-line-over-function.json

@@ -10,7 +10,8 @@
       {
         "abs_path": "bar.py",
         "lineno": 1,
-        "filename": "bar.py"
+        "filename": "bar.py",
+        "in_app": true
       }
     ]
   }

tests/sentry/grouping/grouping_inputs/frame-uses-function-over-lineno.json

@@ -1,5 +1,5 @@
 ---
-created: '2024-12-17T22:50:35.428086+00:00'
+created: '2025-08-11T23:13:29.871161+00:00'
 creator: sentry
 source: tests/sentry/grouping/test_grouphash_metadata.py
 ---
@@ -24,13 +24,13 @@ metrics with tags: {
 ---
 contributing variants:
   system*
-    hash: "fb73cb54ced59b1c0c60d9bb40b7336b"
+    hash: "60e0a667027bef0d0b7c4882891df7e8"
     contributing component: stacktrace
     component:
       system*
         stacktrace*
           frame*
             filename*
               "foo.py"
-            function*
-              "bar"
+            context-line*
+              "foo bar"

tests/sentry/grouping/grouping_inputs/frame-uses-symbol-instead-of-function.json

@@ -1,5 +1,5 @@
 ---
-created: '2025-04-25T21:24:41.413332+00:00'
+created: '2025-08-11T23:13:51.203046+00:00'
 creator: sentry
 source: tests/sentry/grouping/test_grouphash_metadata.py
 ---
@@ -24,23 +24,14 @@ metrics with tags: {
 ---
 contributing variants:
   app*
-    hash: "1effb24729ae4c43efa36b460511136a"
+    hash: "659ad79e2e70c822d30a53d7d889529e"
     contributing component: stacktrace
     component:
       app*
         stacktrace*
           frame* (marked in-app by the client)
             filename*
               "foo.py"
-  system*
-    hash: "659ad79e2e70c822d30a53d7d889529e"
-    contributing component: stacktrace
-    component:
-      system*
-        stacktrace*
-          frame*
-            filename*
-              "foo.py"
-          frame*
+          frame* (marked in-app by the client)
             filename*
               "bar.py"