Tests: Update expected failures

Some of the SpiderMonkey staging tests are incorrect. Others expose bugs
in ICU4C.

polyfill/test/expected-failures.txt

@@ -25,3 +25,17 @@ staging/Intl402/Temporal/old/non-iso-calendars.js
 
 # https://github.com/tc39/test262/pull/4336
 intl402/DateTimeFormat/canonicalize-utc-timezone.js
+
+# Possibly faulty calculations for year 0 in Hebrew calendar in ICU4C
+# https://unicode-org.atlassian.net/browse/ICU-23007
+staging/sm/Temporal/PlainDate/from-constrain-hebrew.js
+
+# Test is incorrect as per https://github.com/tc39/proposal-temporal/issues/2865
+staging/sm/Temporal/PlainDate/from-constrain-japanese.js
+
+# Faulty leap month calculations in Chinese calendar in ICU4C
+# https://unicode-org.atlassian.net/browse/ICU-22230
+staging/sm/Temporal/PlainMonthDay/from-chinese-leap-month-uncommon.js
+
+# Test is incorrect as per https://github.com/tc39/proposal-temporal/issues/2864
+staging/sm/Temporal/PlainMonthDay/from-gregory.js