fix: open FileChooser at AWT Thread

[tangcent]

fix #862

[codecov-commenter]

Codecov Report

Merging #863 (c31aa3e) into master (e0c29af) will not change coverage.
The diff coverage is 40.000%.

@@             Coverage Diff             @@
##              master      #863   +/-   ##
===========================================
  Coverage     60.677%   60.677%           
  Complexity      2322      2322           
===========================================
  Files            263       263           
  Lines          11909     11909           
  Branches        2837      2837           
===========================================
  Hits            7226      7226           
  Misses          3276      3276           
  Partials        1407      1407           

Flag	Coverage Δ
unittests	60.677% <40.000%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
.../com/itangcent/idea/utils/IdeaFileChooserHelper.kt	0.000% <0.000%> (ø)
...com/itangcent/idea/plugin/rule/ScriptRuleParser.kt	50.244% <50.000%> (ø)
...t/idea/plugin/dialog/EasyApiSettingRecommendGUI.kt	0.000% <0.000%> (ø)
...dea/plugin/dialog/EasyApiSettingRemoteConfigGUI.kt	0.000% <0.000%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update e0c29af...c31aa3e. Read the comment docs.