fix: dispose TextPainter after use (#1777)

lib/pangea/morphs/morph_meaning/morph_info_repo.dart

@@ -48,7 +48,7 @@ class MorphInfoRepo {
       set(request, response);
 
       return response;
-    } catch (e, s) {
+    } catch (e) {
       debugPrint('Error fetching morph info: $e');
       return Future.error(e);
     }

lib/pangea/morphs/morph_meaning/morph_info_response.dart

@@ -69,7 +69,8 @@ class MorphologicalFeature {
 
   MorphologicalTag? getTagByCode(String code) {
     return tags.firstWhereOrNull(
-        (tag) => tag.code.toLowerCase() == code.toLowerCase());
+      (tag) => tag.code.toLowerCase() == code.toLowerCase(),
+    );
   }
 }
 
@@ -107,6 +108,7 @@ class MorphInfoResponse {
 
   MorphologicalFeature? getFeatureByCode(String code) {
     return features.firstWhereOrNull(
-        (feature) => feature.code.toLowerCase() == code.toLowerCase());
+      (feature) => feature.code.toLowerCase() == code.toLowerCase(),
+    );
   }
 }

lib/pangea/toolbar/widgets/message_token_text.dart

@@ -105,6 +105,8 @@ class HiddenText extends StatelessWidget {
     final textWidth = textPainter.size.width;
     final textHeight = textPainter.size.height;
 
+    textPainter.dispose();
+
     return SizedBox(
       height: textHeight,
       child: Stack(