Triage on-catch related failing language tests

tests/language/language.status

Index: tests/language/language.status
diff --git a/tests/language/language.status b/tests/language/language.status
index e7ef47bda56e9ab17decfaee8d6f03cd776d60b0..88bd50644211022e3c6db1500428bc0c015faca2 100644
--- a/tests/language/language.status
+++ b/tests/language/language.status
@@ -762,9 +762,6 @@ syntax_test/32: fail
 syntax_test/33: fail
 ternary_test: fail
 throw7_negative_test: fail
-try_catch_on_syntax_test/01: fail
-try_catch_on_syntax_test/07: fail
-try_catch_syntax_test/08: fail
 try_catch_syntax_test/16: fail
 try_catch_syntax_test/17: fail
 type_error_test: fail
@@ -802,6 +799,11 @@ lazy_static3_test: fail, OK
 # test issue 10752, there are 'implicit' scopes for 'if', 'while' and 'do-while'
 implicit_scope_test: fail, OK
 
+# test issue 10890; on-catch UnknownType is a static warning, not error
+try_catch_on_syntax_test/01: fail, OK
+try_catch_on_syntax_test/07: fail, OK
+try_catch_syntax_test/08: fail, OK
+
 [ $compiler == dartanalyzer && $checked ]
 factory1_test/00: fail
 factory1_test/01: fail