assert: fix throws and doesNotThrow stack frames

The stack frames from .throws and .doesNotThrow got included
even though that was not intended.

Backport-PR-URL: #19230
PR-URL: #17703
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

lib/assert.js

@@ -245,7 +245,7 @@ function innerThrows(shouldThrow, block, expected, message) {
         expected,
         operator: 'throws',
         message: `Missing expected exception${details}`,
-        stackStartFn: innerThrows
+        stackStartFn: assert.throws
       });
     }
     if (expected && expectedException(actual, expected) === false) {
@@ -259,7 +259,7 @@ function innerThrows(shouldThrow, block, expected, message) {
         expected,
         operator: 'doesNotThrow',
         message: `Got unwanted exception${details}\n${actual.message}`,
-        stackStartFn: innerThrows
+        stackStartFn: assert.doesNotThrow
       });
     }
     throw actual;

test/parallel/test-assert.js

@@ -634,6 +634,7 @@ testAssertionMessage({ a: NaN, b: Infinity, c: -Infinity },
   } catch (e) {
     threw = true;
     assert.strictEqual(e.message, 'Missing expected exception.');
+    assert.ok(!e.stack.includes('throws'), e.stack);
   }
   assert.ok(threw);
 }
@@ -678,6 +679,7 @@ try {
     threw = true;
     assert.ok(e.message.includes(rangeError.message));
     assert.ok(e instanceof assert.AssertionError);
+    assert.ok(!e.stack.includes('doesNotThrow'), e.stack);
   }
   assert.ok(threw);
 }