Style/RedundantCondition makes invalid autocorrect with condition on operator

[layerssss]

Style/RedundantCondition makes an autocorrect with -a introducing side-effect for

        seconds = if video_started_at
          timestamp - video_started_at
        else
          timestamp - played_at
        end

autocorrected:

        seconds = (timestamp - video_started_at) || played_at

side-effect introduced: the original code wouldn't raise error when video_started_at is nil. The autocorrected one does raise TypeError: can't convert nil into an exact number

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Expected behavior

Rubocop should indicate this can be autocorrected with -A

Actual behavior

Rubocop indicates this can be autocorrected with -a

RuboCop version

Include the output of rubocop -V or bundle exec rubocop -V if using Bundler.
If you see extension cop versions (e.g. rubocop-performance, rubocop-rspec, and others)
output by rubocop -V, include them as well. Here's an example:

$ [bundle exec] rubocop -V
1.32.0 (using Parser 3.1.2.0, rubocop-ast 1.19.1, running on ruby 2.6.6 x86_64-linux)          │~
  - rubocop-rails 2.15.2                                                                       │~
  - rubocop-rspec 2.12.1