chore(Android): fix CI generated changelog (#6922)

Author: Rohit3523

.github/actions/upload-android/action.yml

@@ -65,14 +65,7 @@ runs:
         mkdir -p android/fastlane/metadata/android/en-US/changelogs
 
         if [ -f changelog.txt ]; then
-          char_count=$(wc -m < changelog.txt)
-
-          if [ "$char_count" -gt 500 ]; then
-            cut -c1-497 changelog.txt > "android/fastlane/metadata/android/en-US/changelogs/${BUILD_VERSION}.txt"
-            printf "..." >> "android/fastlane/metadata/android/en-US/changelogs/${BUILD_VERSION}.txt"
-          else
-            cat changelog.txt > "android/fastlane/metadata/android/en-US/changelogs/${BUILD_VERSION}.txt"
-          fi
+          node .github/scripts/prepare-changelog.js
         else
           printf "Internal improvements and bug fixes" > "android/fastlane/metadata/android/en-US/changelogs/${BUILD_VERSION}.txt"
         fi

.github/scripts/prepare-changelog.js

@@ -0,0 +1,20 @@
+const fs = require("fs");
+
+const buildVersion = process.env.BUILD_VERSION;
+const input = fs.readFileSync("changelog.txt", "utf8");
+
+const segmenter = new Intl.Segmenter("en", { granularity: "grapheme" });
+const chars = Array.from(segmenter.segment(input), s => s.segment);
+
+let output;
+if (chars.length > 500) {
+  output = chars.slice(0, 497).join("") + "...";
+} else {
+  output = input;
+}
+
+fs.writeFileSync(
+  `android/fastlane/metadata/android/en-US/changelogs/${buildVersion}.txt`,
+  output,
+  "utf8"
+);