fix: Show Location, Online Event, Mixed Event or To be Announced info correctly

[sachinchauhan2889]

Fixes #5614

Short description of what this resolves:

This PR update the area to show the information according to the attendee pdf as follows:

• When an event has a location, show "At" and the location behind.
• When an event is an online event show "Online Event"
• When the event is a mixed event show "Event taking place online and at [location here]."
• When an event location or online details are "to be announced" show: "Location or online event details to be announced".

Checklist

• I have read the Contribution & Best practices Guide.
• My branch is up-to-date with the Upstream development branch.
• The acceptance, integration, unit tests and linter pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

screenshots

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[codecov]

Codecov Report

Merging #5620 (0895b45) into development (8589e82) will increase coverage by 0.05%.
The diff coverage is n/a.

@@               Coverage Diff               @@
##           development    #5620      +/-   ##
===============================================
+ Coverage        23.73%   23.79%   +0.05%     
===============================================
  Files              498      498              
  Lines             5275     5275              
  Branches            47       47              
===============================================
+ Hits              1252     1255       +3     
+ Misses            4015     4012       -3     
  Partials             8        8              

Impacted Files	Coverage Δ
app/components/tabbed-navigation.js	53.33% <0.00%> (+20.00%)	⬆️

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[sachinchauhan2889]

@iamareebjamal @mariobehling this PR is ready for review

[sachinchauhan2889]

@iamareebjamal sir, this is also mentioned in #5614. Update location in event information box.