fix: message event on webview could not be listened

[niceue]

What kind of change does this PR introduce?

• [x] Bugfix
• [ ] Feature
• [ ] Code style update
• [ ] Refactor
• [ ] Build-related changes
• [ ] Other, please describe:

Does this PR introduce a breaking change?

• [ ] Yes
• [x] No

[codecov-io]

Codecov Report

Merging #295 into develop will not change coverage. The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop     #295   +/-   ##
========================================
  Coverage    97.14%   97.14%           
========================================
  Files           51       51           
  Lines         1647     1647           
========================================
  Hits          1600     1600           
  Misses          47       47

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