Fix sharing to other apps in inbox entries

[pixeldesu]

• Provide both text and url to navigator.share because URL apparently is a must for it to work
• There probably was a race condition with closing the inbox entry and showing the share dialog, closing now waits for the share dialog to be opened
• Added an omit_url option to SocialHelper::TwitterMethods#prepare_tweet
• Just to be sure, added catching errors of the share dialog with a no-op

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (86f9fe0) 95.21% compared to head (6e8f8bc) 95.21%.

❗ Current head 6e8f8bc differs from pull request most recent head f95e11c. Consider uploading reports for the commit f95e11c to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1396      +/-   ##
==========================================
- Coverage   95.21%   95.21%   -0.01%     
==========================================
  Files         168      168              
  Lines        2632     2631       -1     
==========================================
- Hits         2506     2505       -1     
  Misses        126      126              

Files	Coverage Δ
app/controllers/ajax/answer_controller.rb	100.00% <100.00%> (ø)
app/helpers/social_helper/twitter_methods.rb	100.00% <100.00%> (ø)

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