experimental/editor: fix resize

Bug: skia:9020
Change-Id: I2f2ade4a5406b60e1b6c2004136fbbad36085d58
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/230121
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>

experimental/editor/editor.cpp

@@ -450,6 +450,7 @@ void Editor::paint(SkCanvas* c, PaintOpts options) {
 void Editor::markAllDirty() {
     for (TextLine& line : fLines) {
         line.fBlob = nullptr;
+        line.fShaped = false;
     }
     fNeedsReshape = true;
 };