Fix web components tests - package bots use the .html as is, no more %TEST_SOURCE%

.status

Index: .status
diff --git a/.status b/.status
index b3def4b5c30d0062f45f1fc3735fbe906a5ca6dc..2ef412de307bd99d116e96174bda5f5732f88c4d 100644
--- a/.status
+++ b/.status
@@ -11,13 +11,15 @@
 */*/*/*/packages/*/*: Skip
 */*/*/*/*/packages/*/*: Skip
 
-build/*: Skip  # nothing requires pub-build
-
 [ $compiler == none && ($runtime == dartium || $runtime == ContentShellOnAndroid) ]
 test/interop_test: Pass, RuntimeError # Issue 18931
 
 [ $compiler == dart2js && $csp && $runtime == drt ]
-test/interop_test: Fail # Issue 19329
+build/test/interop_test: Fail # Issue 19329
 
 [ $runtime == vm || $runtime == d8 || $runtime == jsshell ]
 test/*: Skip # uses dart:html
+build/test/*: Skip # uses dart:html
+
+[ $compiler == dart2js ]
+test/*: Skip # use pub-build to run tests (they need the companion .html file)