js-on-sx: js-loose-eq unwraps Number and Boolean wrappers

js-loose-eq only had a __js_string_value__ unwrap clause, so
Object(1.1) == 1.1 returned false. Added parallel clauses for
__js_number_value__ and __js_boolean_value__ in both directions.
Now new Number(5) == 5, Object(true) == true, etc.
built-ins/Object: 26/50 → 37/50. conformance.sh: 148/148.

lib/js/test262-scoreboard.md

@@ -1,9 +1,9 @@
 # test262 scoreboard
 
 Pinned commit: `d5e73fc8d2c663554fb72e2380a8c2bc1a318a33`
-Wall time: 238.6s
+Wall time: 226.1s
 
-**Total:** 77/99 runnable passed (77.8%). Raw: pass=77 fail=16 skip=1 timeout=6 total=100.
+**Total:** 78/99 runnable passed (78.8%). Raw: pass=78 fail=15 skip=1 timeout=6 total=100.
 
 ## Top failure modes
 
@@ -11,20 +11,18 @@ Wall time: 238.6s
 - **6x** Timeout
 - **1x** ReferenceError (undefined symbol)
 - **1x** SyntaxError (parse/unsupported syntax)
-- **1x** runner-error: sx_server closed stdout mid-epoch
 
 ## Categories (worst pass-rate first, min 10 runnable)
 
 | Category | Pass | Fail | Skip | Timeout | Total | Pass % |
 |---|---:|---:|---:|---:|---:|---:|
-| built-ins/String | 77 | 16 | 1 | 6 | 100 | 77.8% |
+| built-ins/String | 78 | 15 | 1 | 6 | 100 | 78.8% |
 
 ## Per-category top failures (min 10 runnable, worst first)
 
-### built-ins/String  (77/99 — 77.8%)
+### built-ins/String  (78/99 — 78.8%)
 
 - **13x** Test262Error (assertion failed)
 - **6x** Timeout
 - **1x** ReferenceError (undefined symbol)
 - **1x** SyntaxError (parse/unsupported syntax)
-- **1x** runner-error: sx_server closed stdout mid-epoch