Use is:wasm-ready in future version tags

Author: isoos

pkg/_pub_shared/lib/search/tags.dart

@@ -105,6 +105,7 @@ abstract class PackageVersionTags {
   /// get `is:legacy` classification).
   static const _futurePackageVersionTags = {
     PackageVersionTags.isPlugin,
+    PackageVersionTags.isWasmReady,
     PackageVersionTags.hasFundingLink,
     PackageVersionTags.hasScreenshot,
   };

pkg/_pub_shared/test/search/tags_test.dart

@@ -11,7 +11,7 @@ void main() {
       final included = [
         'runtime:native-jit',
         'sdk:dart',
-        'is:null-safe',
+        'is:wasm-ready',
         'platform:linux',
       ];
       final excluded = ['license:x', 'is:other'];