HS test generator: flatten whitespace in toEqual({...}) TODO comment

The Pattern 1c emitter wrote `;; TODO: assert= ... against {...}` for
object-literal .toEqual() assertions it couldn't translate. It only
.strip()'d the literal, leaving internal newlines intact — so a
multi-line `{...}` leaked SX-invalid text onto subsequent lines and
broke the parse for the rest of the suite.

Collapse all whitespace inside the literal so the `;;` prefix covers the
whole comment.

After regenerating, 1,022/1,496 pass (was 1,013/1,496 with a hand-
patched behavioral.sx). No runtime changes.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/playwright/generate-sx-tests.py

@@ -1072,8 +1072,11 @@ def generate_eval_only_test(test, idx):
             body, re.DOTALL
         ):
             hs_expr = extract_hs_expr(m.group(2))
-            # Object toEqual — emit as dict assertion comment (can't fully convert JS objects to SX)
-            obj_str = m.group(3).strip()
+            # Object toEqual — emit as single-line TODO comment. Collapse
+            # whitespace inside the JS literal so the `;;` prefix covers the
+            # whole line; a multi-line `{...}` would leak SX-invalid text
+            # onto subsequent lines and break the parse.
+            obj_str = re.sub(r'\s+', ' ', m.group(3)).strip()
             assertions.append(f'    ;; TODO: assert= (eval-hs "{hs_expr}") against {obj_str}')
 
     # Pattern 2: Two-line — var result = await run(`expr`, opts); expect(result...).toBe/toEqual(val)