fix: enable use of tsx files in add-ons (#13323)

Also copy any tsx file resources
form add-on folders.

Fixes #13318

flow-server/src/main/java/com/vaadin/flow/server/frontend/TaskCopyFrontendFiles.java

@@ -37,7 +37,7 @@
 public class TaskCopyFrontendFiles implements FallibleCommand {
     private static final String[] WILDCARD_INCLUSIONS = new String[] {
             "**/*.js", "**/*.js.map", "**/*.css", "**/*.css.map", "**/*.ts",
-            "**/*.ts.map" };
+            "**/*.ts.map", "**/*.tsx", "**/*.tsx.map" };
     private static final String WILDCARD_INCLUSION_APP_THEME_JAR = "**/themes/**/*";
     private File targetDirectory;
     private Set<File> resourceLocations = null;

flow-server/src/test/java/com/vaadin/flow/server/frontend/FrontendResourcesAreCopiedAfterCleaningTest.java

@@ -58,14 +58,14 @@ public void setup() throws IOException, ExecutionFailedException {
     public void frontendResources_should_beCopiedFromJars_when_TaskUpdatePackagesRemovesThem()
             throws IOException, ExecutionFailedException {
         copyResources();
-        assertCopiedFrontendFileAmount(6/* jar files */ + 1/* package.json */);
+        assertCopiedFrontendFileAmount(8/* jar files */ + 1/* package.json */);
 
         performPackageClean();
         // Should keep the `package.json` file
         assertCopiedFrontendFileAmount(1);
 
         copyResources();
-        assertCopiedFrontendFileAmount(6/* jar files */ + 1/* package.json */);
+        assertCopiedFrontendFileAmount(8/* jar files */ + 1/* package.json */);
     }
 
     private void assertCopiedFrontendFileAmount(int fileCount)

flow-server/src/test/java/com/vaadin/flow/server/frontend/TaskCopyFrontendFilesTest.java

@@ -105,7 +105,7 @@ private void should_collectJsAndCssFilesFromJars(String jarFile,
         task.execute();
 
         List<String> files = TestUtils.listFilesRecursively(frontendDepsFolder);
-        Assert.assertEquals(8, files.size());
+        Assert.assertEquals(10, files.size());
 
         Assert.assertTrue("TS resource should have been copied from jar file",
                 files.contains("example.ts"));
@@ -135,6 +135,13 @@ private void should_collectJsAndCssFilesFromJars(String jarFile,
         Assert.assertTrue(
                 "JS resource source map should have been copied from resource folder",
                 files.contains("resourceInFolder.js.map"));
+
+        Assert.assertTrue("TSX resource should have been copied from jar file",
+                files.contains("react.tsx"));
+
+        Assert.assertTrue(
+                "TSX resource source map should have been copied from jar file",
+                files.contains("react.tsx.map"));
     }
 
     private static Set<File> jars(File... files) {