!112 merge fix/ohos-browser-fallback into main

fix(ohos): fall back to system browser when haitai browser is not installed

Created-by: qq_60134168
Commit-by: yujiangtao
Merged-by: SWangHash
Description: ## Summary

<!-- Briefly describe what changed. -->

Fixes #
修复浏览器跳转异常
## Type and Areas

Type:

<!-- Feature / bug fix / regression fix / refactor / UI/UX / docs / test / CI / dependency / other. -->

Areas:

<!-- Rust core, desktop/Tauri, web UI, mobile web, server/relay, AI adapters, installer, docs, etc. -->

## Motivation / Impact

<!-- What problem does this solve, and what changes for users or developers? Write "No direct user-facing change" if applicable. -->

## Verification

<!-- List exact commands, manual checks, and outcomes. For docs-only or template-only changes, use the lightest relevant checks or explain why runtime checks were skipped. -->

## Reviewer Notes

<!-- Optional: screenshots, architecture notes, compatibility risks, migration notes, or rollback guidance. -->

## Checklist

- [ ] This PR is focused and does not include secrets, temporary prompts, generated scratch files, or unrelated artifacts.
- [ ] Relevant verification is recorded above, or skipped checks are explained.
- [ ] User-facing strings, docs, and locales are updated where applicable.


See merge request: OpenHarmonyPCDeveloper/BitFun!112

Author: SWangHash

src/apps/ohos/entry/src/main/ets/entryability/EntryAbility.ets

@@ -270,9 +270,21 @@ export default class EntryAbility extends RustAbility {
           "uri": url
         }
         if (/^https?:\/\//i.test(url)) {
-          want.bundleName = 'com.haitai.htbrowser';
-          want.moduleName = 'pc_entry';
-          want.abilityName = 'EntryAbility';
+          try {
+            want.bundleName = 'com.haitai.htbrowser';
+            want.moduleName = 'pc_entry';
+            want.abilityName = 'EntryAbility';
+            await this.context.startAbility(want);
+            hilog.info(201, 'vnext', `open url succeed (haitai): ${url}`);
+            return `start ability succeed with ${url}`;
+          } catch (haitaiError) {
+            hilog.info(201, 'vnext', `haitai browser unavailable, falling back to system browser: ${haitaiError.code}`);
+            want = {
+              "action": "ohos.want.action.viewData",
+              "entities": ["entity.system.browsable"],
+              "uri": url
+            };
+          }
         }
         await this.context.startAbility(want);
         hilog.info(201, 'vnext', `open url succeed: ${url}`);